| ACRNM | acronym (ISO, CEI) |
| ADJ | Adjectives (mayores, mayor) |
| ADV | Adverbs (muy, demasiado, cómo) |
| ALFP | Plural letter of the alphabet (As/Aes, bes) |
| ALFS | Singular letter of the alphabet (A, b) |
| ART | Articles (un, las, la, unas) |
| BACKSLASH | backslash (\) |
| CARD | Cardinals |
| CC | Coordinating conjunction (y, o) |
| CCAD | Adversative coordinating conjunction (pero) |
| CCNEG | Negative coordinating conjunction (ni) |
| CM | comma (,) |
| CODE | Alphanumeric code |
| COLON | colon (:) |
| CQUE | que (as conjunction) |
| CSUBF | Subordinating conjunction that introduces finite clauses (apenas) |
| CSUBI | Subordinating conjunction that introduces infinite clauses (al) |
| CSUBX | Subordinating conjunction underspecified for subord-type (aunque) |
| DASH | dash (-) |
| DM | Demonstrative pronouns (ésas, ése, esta) |
| DOTS | POS tag for "..." |
| FO | Formula |
| FS | Full stop punctuation marks |
| INT | Interrogative pronouns (quiénes, cuántas, cuánto) |
| ITJN | Interjection (oh, ja) |
| LP | left parenthesis ("(", "[") |
| NC | Common nouns (mesas, mesa, libro, ordenador) |
| NEG | Negation |
| NMEA | measure noun (metros, litros) |
| NMON | month name |
| NP | Proper nouns |
| ORD | Ordinals (primer, primeras, primera) |
| PAL | Portmanteau word formed by a and el |
| PDEL | Portmanteau word formed by de and el |
| PE | Foreign word |
| PERCT | percent sign (%) |
| PNC | Unclassified word |
| PPC | Clitic personal pronoun (le, les) |
| PPO | Possessive pronouns (mi, su, sus) |
| PPX | Clitics and personal pronouns (nos, me, nosotras, te, sí) |
| PREP | Negative preposition (sin) |
| PREP | Preposition |
| PREP/DEL | Complex preposition "después del" |
| QT | quotation symbol (" ' `) |
| QU | Quantifiers (sendas, cada) |
| REL | Relative pronouns (cuyas, cuyo) |
| RP | right parenthesis (")", "]") |
| SE | Se (as particle) |
| SEMICOLON | semicolon (;) |
| SLASH | slash (/) |
| SYM | Symbols |
| UMMX | measure unit (MHz, km, mA) |
| VCLIger | clitic gerund verb |
| VCLIinf | clitic infinitive verb |
| VCLIfin | clitic finite verb |
| VEadj | Verb estar. Past participle |
| VEfin | Verb estar. Finite |
| VEger | Verb estar. Gerund |
| VEinf | Verb estar. Infinitive |
| VHadj | Verb haber. Past participle |
| VHfin | Verb haber. Finite |
| VHger | Verb haber. Gerund |
| VHinf | Verb haber. Infinitive |
| VLadj | Lexical verb. Past participle |
| VLfin | Lexical verb. Finite |
| VLger | Lexical verb. Gerund |
| VLinf | Lexical verb. Infinitive |
| VMadj | Modal verb. Past participle |
| VMfin | Modal verb. Finite |
| VMger | Modal verb. Gerund |
| VMinf | Modal verb. Infinitive |
| VSadj | Verb ser. Past participle |
| VSfin | Verb ser. Finite |
| VSger | Verb ser. Gerund |
| VSinf | Verb ser. Infinitive |