calcify vs alter

calcify and alter both are verbs.

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

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

Other hypernyms of calcify include change, modify.

calcify (verb)	alter (verb)
turn into lime; become calcified	remove the ovaries of
convert into lime	become different in some particular way, without permanently losing one's or its former characteristics or essence
become impregnated with calcium salts	cause to change; make different; cause a transformation
become inflexible and unchanging	insert words into texts, often falsifying it thereby
	make an alteration to