removal vs extraction

removal and extraction both are nouns.

Word	Noun	Adjective	Verb	Adverb
removal	Yes	No	No	No
extraction	Yes	No	No	No

As nouns, extraction is a hyponym of removal; that is, extraction is a word with a more specific, narrower meaning than removal:

removal: the act of removing
extraction: the action of taking out something (especially using effort or force)

removal (noun)	extraction (noun)
the act of removing	the action of taking out something (especially using effort or force)
dismissal from office	properties attributable to your ancestry
	the process of obtaining something from a mixture or compound by chemical or physical or mechanical means