Subject  | Description | Entries | Users |
| aero. | Aeronautica / Aviation | 100 | 509 |
| agr. | Agraria / Agriculture, Aquaculture | 83 | 307 |
| aliment. | Industria Alimentare / Foodstuffs Industry | 55 | 321 |
| alp. | Alpinismo / Climbing, Mountaineering | 17 | 273 |
| amb. | Ambiente / Ecology, Environment | 46 | 767 |
| amm. | Amministrazione (pubblica) / (Public) Administration | 157 | 442 |
| anat. | Anatomia / Human Anatomy | 288 | 554 |
| arald. | Araldica / Heraldry | 3 | 118 |
| archeo. | Archeologia / Archaeology | 39 | 392 |
| archi. | Architettura / Architecture | 207 | 516 |
| armi | Armi / Weapons | 66 | 417 |
| arte | Arte / Art | 110 | 1271 |
| assic. | Assicurazioni / Insurance | 49 | 180 |
| astron. | Astronomia / Astronomy | 167 | 670 |
| astronau | Astronautica / Astronautics | 19 | 369 |
| attr. | Attrezzo / Tools | 101 | 529 |
| audio | Audiologia, Acustica / Audiology | 22 | 228 |
| automob. | Automobili / Automotive Engineering | 163 | 533 |
| bibl. | Bibbia / Biblical | 9 | 412 |
| bici | Bicicletta / Bicycle | 18 | 553 |
| biochim. | Biochimica / Biochemistry | 110 | 357 |
| biol. | Biologia / Biology | 222 | 725 |
| biotec. | Biotecnologia / Biotechnology | 5 | 308 |
| birr. | Birrificazione / Brewing | 2 | 171 |
| borsa | Borsa / Stock Exchange | 14 | 276 |
| bot. | Botanica / Botany, Plants | 431 | 434 |
| caccia | Caccia / Hunting | 14 | 136 |
| chim. | Chimica / Chemistry | 730 | 589 |
| cit. | Citazione / Quotation | 1 | 496 |
| comm. | Commercio, distribuzione / Commerce | 330 | 574 |
| comp. | Computer / Computer Sciences | 145 | 1743 |
| contab. | Contabilità / Accounting | 19 | 438 |
| cosm. | Cosmetica e cura del corpo / Cosmetics & Body Care | 53 | 273 |
| danza | Danza / Dance | 10 | 406 |
| dir. | Diritto / Law | 524 | 621 |
| econ. | Economia / Economy | 275 | 980 |
| edil. | Edilizia / Construction | 106 | 357 |
| editoria | Editoria / Publishing | 51 | 279 |
| educ. | Educazione / Education | 178 | 1291 |
| elettr. | Elettronica, elettrotecnica / Electrical Engin., Electronics | 104 | 744 |
| enol. | Enologia / Oenology | 21 | 130 |
| entom. | Entomologia / Entomology | 55 | 115 |
| equit. | Equitazione, Cavalli / Equestrianism, Horses | 17 | 138 |
| esot. | Esoterismo / Esotericism | 19 | 251 |
| etn. | Etnologia / Ethnology | 110 | 294 |
| F | Nomi e titoli in letteratura, film, tv, arte / Fiction: Names and Titles in Literature, Film, TV, Arts | 249 | 850 |
| farm. | Farmacia / Pharmacy | 114 | 310 |
| filat. | Filatelia / Philately | 6 | 65 |
| film | Film / Film | 135 | 1358 |
| filos. | Filosofia / Philosophy | 116 | 1016 |
| fin. | Finanza / Finance | 358 | 615 |
| fis. | Fisica / Physics | 263 | 856 |
| fonet. | Fonetica / Phonetics | 11 | 441 |
| foto. | Fotografia / Photography | 50 | 859 |
| fumetti | Fumetti e Cartoni Animati / Comics and Animated Cartoons | 37 | 375 |
| gastr. | Gastronomia / Gastronomy, Cooking | 665 | 694 |
| geogr. | Geografia / Geography | 412 | 922 |
| geol. | Geologia / Geology | 120 | 328 |
| gioca. | Giocattoli / Toys | 7 | 241 |
| giochi | Giochi / Games | 64 | 966 |
| gior. | Giornalismo / Journalism | 53 | 471 |
| GQ | Gestione della qualità / Quality Management | 3 | 294 |
| idro. | Idrologia & Idrogeologia / Hydrology & Hydrogeology | 34 | 116 |
| immob. | Immobili / Real Estate | 49 | 248 |
| ind. | Industria / Industry | 33 | 536 |
| ingeg. | Ingegneria / Engineering | 6 | 1018 |
| internet | Internet / Internet | 28 | 1537 |
| ittiol. | Ittiologia, pesca / Ichthyology, fish, fishing | 125 | 116 |
| lett. | Letteratura / Literature | 293 | 1318 |
| libri | Libri / Library Science | 14 | 204 |
| ling. | Linguistica / Linguistics | 262 | 1510 |
| loc. | Locuzione / Idiom | 38 | 708 |
| market. | Marketing / Marketing, Advertising | 20 | 573 |
| mat. | Matematica / Mathematics | 583 | 881 |
| material | Scienza dei Materiali / Materials Science | 30 | 308 |
| med. | Medicina / Medicine | 933 | 886 |
| meteo. | Meteorologia / Meteorology | 156 | 243 |
| micol. | Micologia / Mycology | 14 | 123 |
| mil. | Arte militare / Military | 215 | 443 |
| mineral. | Mineralogia / Mineralogy | 37 | 162 |
| miniera | Miniera / Mining & Drilling | 9 | 118 |
| mitol. | Mitologia / Mythology | 102 | 543 |
| mobili | Mobili / Furniture | 90 | 244 |
| mus. | Musica / Music | 277 | 1828 |
| naut. | Nautica / Nautical Science | 125 | 230 |
| neol. | Neologismo / Neologisms | 2 | 194 |
| nucl. | Ingegneria Nucleare / Nuclear Engineering | 16 | 195 |
| odonto | Odontoiatria / Dental Medicine | 24 | 137 |
| onomast. | Onomastica / Names of Persons | 11 | 237 |
| orn. | Ornitologia / Ornithology | 796 | 159 |
| orol. | Orologi / Watches, Clocks | 22 | 215 |
| ortic. | Orticoltura / Horticulture | 29 | 256 |
| ottica | Ottica / Optics | 26 | 186 |
| pol. | Politica / Politics | 451 | 1060 |
| prof. | Professione / Jobs, Employment Market | 694 | 610 |
| prov. | Proverbio / Proverb | 17 | 653 |
| psic. | Psicologia / Psychology | 179 | 970 |
| RadioTV | Televisione e radio / Radio and Television | 52 | 576 |
| relig. | Religione / Religion | 303 | 725 |
| retor. | Retorica / Rhetoric | 9 | 428 |
| scienza | Scienza / Academic Disciplines | 280 | 1728 |
| selv. | Selvicoltura / Forestry | 19 | 181 |
| SocFuoc. | Servizio di soccorso e protezione antincendio / Firefighting & Rescue | 20 | 144 |
| sociol. | Sociologia / Sociology | 186 | 583 |
| spec. | Di linguaggio speciale / Specialized Term | 8 | 390 |
| sport | Sport / Sports | 352 | 1000 |
| stat. | Statistica / Statistics | 44 | 377 |
| stor. | Storia / History | 164 | 1423 |
| stupef. | Stupefacenti / Drugs | 10 | 293 |
| T | T / Taxonomic terms for animals, plants and fungi (incl. varieties and breeds) | 1802 | 17 |
| teatro | Teatro / Theatre | 76 | 523 |
| tec. | Tecnica / Technology | 229 | 1356 |
| TecMed. | Tecnologia Medica / Medical Engineering & Imaging | 25 | 273 |
| telecom. | Telecomunicazione / Telecommunications | 47 | 563 |
| tessili | Tessili, Industria tessile / Textiles, Textile Industry | 45 | 168 |
| tip. | Tipografia / Print, Typography, Layout | 15 | 296 |
| TM | Marchi Registrati [©™®] / Trademarks, Brand Names | 1 | 105 |
| traff. | Traffico / Traffic | 141 | 339 |
| trasp. | Trasporti (trasporto via terra) / Transportation (Land Transport) | 45 | 363 |
| treno | Treno / Rail | 51 | 235 |
| turismo | Turismo / Travel Industry | 107 | 562 |
| UE | Unione Europea / European Union | 2 | 714 |
| unità | Unità di misura / Units, Measures, Weights | 56 | 454 |
| urban. | Urbanistica / Urban Planning | 38 | 254 |
| uWH | UNESCO / UNESCO World Heritage | 3 | 284 |
| valuta | Valuta / Currencies | 13 | 281 |
| vest. | Vestiti e moda / Clothing, Fashion | 162 | 477 |
| VetMed. | Medicina Veterinaria / Veterinary Medicine | 13 | 176 |
| VocVia. | Vocabolario di viaggio / Travellers vocabulary | 77 | 728 |
| zool. | Zoologia / Zoology, Animals | 802 | 694 |
