A tagset is a list of part-of-speech tags (POS tags for short), i.e. labels used to indicate the part of speech and sometimes also other grammatical categories (case, tense etc.) of each token in a text corpus.

Penn Treebank tagset

Sanskrit Penn Treebank part-of-speech tagset is available in Sanskrit corpora annotated by the tool TreeTagger that was developed by Helmut Schmid in the TC project at the Institute for Computational Linguistics of the University of Stuttgart and containing modifications developed by Sketch Engine.

The following table shows Sanskrit Penn TreeBank part-of-speech tagset including Sketch Engine differences

An Example of a tag in the CQL concordance search box: [xpos="JJ"] finds all adjectives, e.g. mahat, priya (note: please make sure that you use straight double quotation marks)

POS Tag Description Example
CAD adverb ca, tatra, punaḥ, na
CADP preverbs abhi, pra
CCD coordinating conjunction ca (‘and’), tu (‘but’), vā (‘or’)
CCM particles for comparison iva (‘like’), yathā (‘as, like’)
CEM emphatic particle eva (‘indeed’), ha (‘really’) , u (‘and’)
CGDA absolutive gerund gam/gatvā (‘go/having gone’), kṛ, dṛś, śru
CGDI infinitive gam/gantum (‘go/to go’), dṛś/dṛśe (‘see/to see’), śru, kṛ
CNG negation na (‘not’), mā (‘no’)
CQT quotation particle iti (‘thus’)
CSB subordinating conjunction yat (‘that’), yadi (‘if’), yadā (‘when’)
CX other adverbs and indeclinables itthā (‘so, thus’), tathā (‘such’), tatas (‘further, here and there’), hi (‘of course, for’)
JJ adjective mahat, mahātman, priya
JQ quantifying adjective bahu (‘many, much’), sarva (‘all, every,..’)
KDG gerundive gam/gantavya (‘to go/to be gone’), kṛ/kartavya (‘to do/to be done’)
KDP participle gam/gacchat (‘to go/going’), dṛś/darzana (‘to see/seeing ‘)
NC common noun deva, loka, agni
NUM number aṣṭan, tri, śata
PPP past participle gam/gata (‘to go/gone’), smṛ/smṛta (‘to remember/remembered’)
PPR personal pronoun mad (‘my, mine’), tvad (‘ urs’)
PPX other words inflected like pronouns para (‘other’), itara (‘another’), eka (‘one’), ubh (‘both’)
PRC reciprocal pronoun paraspara (‘mutually’), anyonya (‘each other’), ekaika (‘each one’)
PRD demonstrative pronoun tad (‘that’), idam (‘this’), adas (‘thus’)
PRI indefinite pronoun kaścit (‘someone’), kaścana (‘anyone’)
PRL relative pronoun yad (‘what/which’) *** [yad ca / ‘and what, what’s more’]
PRQ interrogative pronoun ka (‘who’), katama (‘which/what’), katara (‘which’)
V finite verbal form bhū, vac, as, kṛ, gam

Source: https://github.com/OliverHellwig/sanskrit