concentrate vs alter

concentrate is a noun but alter is not a noun.

Word	Noun	Adjective	Verb	Adverb
concentrate	Yes	No	Yes	No
alter	No	No	Yes	No

As verbs, alter is a hypernym of concentrate; that is, alter is a word with a broader meaning than concentrate:

Other hypernyms of concentrate include change, modify.

As verbs, alter is a hypernym of concentrate; that is, alter is a word with a broader meaning than concentrate:

Other hypernyms of concentrate include change, modify.

concentrate (noun)	alter (noun)
a concentrated example of something
a concentrated form of a foodstuff; the bulk is reduced by removing water
the desired mineral that is left after impurities have been removed from mined ore

concentrate (verb)	alter (verb)
cook until very little liquid is left	remove the ovaries of
make denser, stronger, or purer	become different in some particular way, without permanently losing one's or its former characteristics or essence
make central	cause to change; make different; cause a transformation
be cooked until very little liquid is left	insert words into texts, often falsifying it thereby
make more concise	make an alteration to
compress or concentrate
direct one's attention on something
draw together or meet in one common center