replacement vs backup

backup vs replacement

replacement and backup both are nouns.

Word	Noun	Adjective	Verb	Adverb
replacement	Yes	No	No	No
backup	Yes	No	No	No

As nouns, backup is a hypernym of replacement; that is, backup is a word with a broader meaning than replacement:

replacement: someone who takes the place of another person
backup: someone who takes the place of another (as when things get dangerous or difficult)

Other hypernyms of replacement include backup man, fill-in, relief, reliever, stand-in, substitute.

replacement (noun)	backup (noun)
the act of furnishing an equivalent person or thing in the place of another	the act of providing approval and support
a person or thing that takes or can take the place of another	(computer science) a copy of a file or directory on a separate storage device
an event in which one thing is substituted for another	a musical part (vocal or instrumental) that supports or provides background for other musical parts
a person who follows next in order	someone who takes the place of another (as when things get dangerous or difficult)
someone who takes the place of another person	an accumulation caused by clogging or a stoppage
filling again by supplying what has been used up

Difference between replacement and backup

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