| Tag | Meaning | | |
| 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 | | |