notch vs indentation

notch and indentation both are nouns.

Word	Noun	Adjective	Verb	Adverb
notch	Yes	No	Yes	No
indentation	Yes	No	No	No

As nouns, indentation is a hypernym of notch; that is, indentation is a word with a broader meaning than notch:

notch: a V-shaped or U-shaped indentation carved or scratched into a surface
indentation: a concave cut into a surface or edge (as in a coastline)

Other hypernyms of notch include indenture.

As nouns, indentation is a hypernym of notch; that is, indentation is a word with a broader meaning than notch:

Other hypernyms of notch include indenture.

notch (noun)	indentation (noun)
a small cut	the act of cutting into an edge with toothlike notches or angular incisions
a V-shaped or U-shaped indentation carved or scratched into a surface	the space left between the margin and the start of an indented line
the location in a range of mountains of a geological formation that is lower than the surrounding peaks	the formation of small pits in a surface as a consequence of corrosion
a V-shaped indentation	a concave cut into a surface or edge (as in a coastline)

notch (verb)	indentation (verb)
notch a surface to record something
cut or make a notch into