replace vs truncate

replace is not an adjective while truncate is an adjective.

Word	Noun	Adjective	Verb	Adverb
replace	No	No	Yes	No
truncate	No	Yes	Yes	No

As verbs, truncate is a hyponym of replace; that is, truncate is a word with a more specific, narrower meaning than replace:

Other hyponyms of replace include shift, reduce, retool, subrogate.

replace (adjective)	truncate (adjective)
	terminating abruptly by having or as if having an end or point cut off

replace (verb)	truncate (verb)
substitute a person or thing for (another that is broken or inefficient or lost or no longer working or yielding what is expected)	make shorter as if by cutting off
put something back where it belongs	approximate by ignoring all terms beyond a chosen one
put in the place of another; switch seemingly equivalent items	replace a corner by a plane
take the place or move into the position of