get on vs fossilise

get on and fossilise both are verbs.

Word	Noun	Adjective	Verb	Adverb
get on	No	No	Yes	No
fossilise	No	No	Yes	No

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

Other hyponyms of get on include turn, fossilize, dote.

get on (verb)	fossilise (verb)
develop in a positive way	convert to a fossil
appear in a show, on T.V. or radio	become mentally inflexible
grow old or older
get up on the back of
grow late or (of time) elapse
get on board of (trains, buses, ships, aircraft, etc.)
have smooth relations