come through vs attain

come through and attain both are verbs.

Word	Noun	Adjective	Verb	Adverb
come through	No	No	Yes	No
attain	No	No	Yes	No

As verbs, attain is a hypernym of come through; that is, attain is a word with a broader meaning than come through:

come through: succeed in reaching a real or abstract destination after overcoming problems
attain: reach a destination, either real or abstract

Other hypernyms of come through include arrive at, gain, hit, make, reach.

As verbs, attain is a hyponym of come through; that is, attain is a word with a more specific, narrower meaning than come through:

come through (verb)	attain (verb)
penetrate	reach a point in time, or a certain state or level
succeed in reaching a real or abstract destination after overcoming problems	reach a destination, either real or abstract
attain success or reach a desired goal	find unexpectedly
continue in existence after (an adversity, etc.)	to gain with effort