asana vs matsyendra

asana and matsyendra both are nouns.

Word	Noun	Adjective	Verb	Adverb
asana	Yes	No	No	No
matsyendra	Yes	No	No	No

As nouns, matsyendra is a hyponym of asana; that is, matsyendra is a word with a more specific, narrower meaning than asana:

asana: (Hinduism) a posture or manner of sitting (as in the practice of yoga)
matsyendra: (Hinduism) a religious posture

asana (noun)	matsyendra (noun)
(Hinduism) a posture or manner of sitting (as in the practice of yoga)	(Hinduism) a religious posture