stand firm vs withstand

stand firm and withstand both are verbs.

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

As verbs, stand firm and withstand are synonyms defined as:

stand firm and withstand: stand up or offer resistance to somebody or something

Other synonyms of stand firm include hold out, resist.

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

Other hyponyms of stand firm include stand out, stand up, outbrave, hold off, remain firm, stand, defy, hold, hold up.

stand firm (verb)	withstand (verb)
refuse to abandon one's opinion or belief	stand up or offer resistance to somebody or something
stand up or offer resistance to somebody or something	resist or confront with resistance