come on vs come along

come on and come along both are verbs.

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

As verbs, come on and come along are synonyms defined as:

Other synonyms of come on include advance, get along, get on, progress, shape up.

come on (verb)	come along (verb)
occur or become available	come into being or existence, or appear on the scene
appear or become visible; make a showing	develop in a positive way
develop in a positive way
start running, functioning, or operating
move towards