strive vs be at pains

strive and be at pains both are verbs.

Word	Noun	Adjective	Verb	Adverb
strive	No	No	Yes	No
be at pains	No	No	Yes	No

As verbs, be at pains is a hyponym of strive; that is, be at pains is a word with a more specific, narrower meaning than strive:

Other hyponyms of strive include struggle, take pains, buck.

strive (verb)	be at pains (verb)
to exert much effort or energy	try very hard to do something
attempt by employing effort