come along vs climb

come along is not a noun while climb is a noun.

Word	Noun	Adjective	Verb	Adverb
come along	No	No	Yes	No
climb	Yes	No	Yes	No

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

Other hyponyms of come along include leapfrog.

come along (noun)	climb (noun)
	the act of climbing something
	an event that involves rising to a higher point (as in altitude or temperature or intensity etc.)
	an upward slope or grade (as in a road)

come along (verb)	climb (verb)
come into being or existence, or appear on the scene	go up or advance
develop in a positive way	increase in value or to a higher point
	improve one's social status
	go upward with gradual or continuous progress
	move with effort, by grasping
	slope upward