compass vs get onto

compass is a noun but get onto is not a noun.

Word	Noun	Adjective	Verb	Adverb
compass	Yes	No	Yes	No
get onto	No	No	Yes	No

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

Other hyponyms of compass include figure, catch on, cotton on, get it, get wise, latch on, tumble, twig, intuit, digest.

compass (noun)	get onto (noun)
navigational instrument for finding directions
drafting instrument used for drawing circles
an area in which something acts or operates or has power or control:
the limit of capability

compass (verb)	get onto (verb)
get the meaning of something	understand, usually after some initial difficulty
travel around, either by plane or ship
bring about; accomplish