get across vs tramp

get across is not a noun while tramp is a noun.

Word	Noun	Adjective	Verb	Adverb
get across	No	No	Yes	No
tramp	Yes	No	Yes	No

As verbs, tramp is a hyponym of get across; that is, tramp is a word with a more specific, narrower meaning than get across:

Other hyponyms of get across include walk, crisscross, ford, bridge, jaywalk, drive, take, course, hop.

get across (noun)	tramp (noun)
	a long walk usually for exercise or pleasure
	a commercial steamer for hire; one having no regular schedule
	a heavy footfall
	a vagrant
	a person who engages freely in promiscuous sex
	a foot traveler; someone who goes on an extended walk (for pleasure)

get across (verb)	tramp (verb)
become clear or enter one's consciousness or emotions	travel on foot, especially on a walking expedition
communicate successfully	walk heavily and firmly, as when weary, or through mud
travel across or pass over	move about aimlessly or without any destination, often in search of food or employment
	cross on foot