oppose vs stand firm

oppose and stand firm both are verbs.

Word	Noun	Adjective	Verb	Adverb
oppose	No	No	Yes	No
stand firm	No	No	Yes	No

As verbs, stand firm is a hyponym of oppose; that is, stand firm is a word with a more specific, narrower meaning than oppose:

oppose (verb)	stand firm (verb)
be resistant to	refuse to abandon one's opinion or belief
be against; express opposition to	stand up or offer resistance to somebody or something
set into opposition or rivalry
fight against or resist strongly
act against or in opposition to
contrast with equal weight or force