fall in line vs align

fall in line and align both are verbs.

Word	Noun	Adjective	Verb	Adverb
fall in line	No	No	Yes	No
align	No	No	Yes	No

As verbs, align is a hypernym of fall in line; that is, align is a word with a broader meaning than fall in line:

Other hypernyms of fall in line include array.

fall in line (verb)	align (verb)
agree on (a position)	place in a line or arrange so as to be parallel or straight
	bring (components or parts) into proper or desirable coordination correlation
	align oneself with a group or a way of thinking
	be or come into adjustment with