notch vs serration

notch and serration both are nouns.

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

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

notch: a V-shaped or U-shaped indentation carved or scratched into a surface
serration: a single notch in a row of notches

Other hyponyms of notch include thumb index, undercut.

notch (noun)	serration (noun)
a small cut	a single notch in a row of notches
a V-shaped or U-shaped indentation carved or scratched into a surface	a row of notches
the location in a range of mountains of a geological formation that is lower than the surrounding peaks	the condition of being serrated
a V-shaped indentation

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