backup vs replacement

replacement vs backup

backup and replacement both are nouns.

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

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

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

Other hyponyms of backup include locum, locum tenens, double, alternate, surrogate.

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

Difference between backup and replacement

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