abstraction vs removal

abstraction and removal both are nouns.

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

As nouns, removal is a hypernym of abstraction; that is, removal is a word with a broader meaning than abstraction:

Other hypernyms of abstraction include remotion.

abstraction (noun)	removal (noun)
a general concept formed by extracting common features from specific examples	the act of removing
the act of withdrawing or removing something	dismissal from office
an abstract painting
a concept or idea not associated with any specific instance
preoccupation with something to the exclusion of all else
the process of formulating general concepts by abstracting common properties of instances