betray vs discover

betray and discover both are verbs.

Word	Noun	Adjective	Verb	Adverb
betray	No	No	Yes	No
discover	No	No	Yes	No

As verbs, discover is a hypernym of betray; that is, discover is a word with a broader meaning than betray:

betray: reveal unintentionally
discover: make known to the public information that was previously known only to a few people or that was meant to be kept a secret

Other hypernyms of betray include break, bring out, disclose, divulge, expose, give away, let on, let out, reveal, uncover, unwrap.

betray (verb)	discover (verb)
give away information about somebody	get to know or become aware of, usually accidentally
reveal unintentionally	identify as in botany or biology, for example
cause someone to believe an untruth	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
disappoint, prove undependable to; abandon, forsake	make a discovery, make a new finding
deliver to an enemy by treachery	see for the first time; make a discovery
be sexually unfaithful to one's partner in marriage	discover or determine the existence, presence, or fact of by perception with the eyes
	find unexpectedly