thrash vs vanquish

thrash is a noun but vanquish is not a noun.

Word	Noun	Adjective	Verb	Adverb
thrash	Yes	No	Yes	No
vanquish	No	No	Yes	No

As verbs, vanquish is a hypernym of thrash; that is, vanquish is a word with a broader meaning than thrash:

Other hypernyms of thrash include beat, beat out, crush, shell, trounce.

thrash (noun)	vanquish (noun)
a swimming kick used while treading water

thrash (verb)	vanquish (verb)
give a thrashing to; beat hard	come out better in a competition, race, or conflict
beat the seeds out of a grain
beat thoroughly and conclusively in a competition or fight
dance the slam dance
move or stir about violently
beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all
move data into and out of core rather than performing useful computation