decimalise vs alter

decimalise and alter both are verbs.

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

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

Other hypernyms of decimalise include change, modify.

decimalise (verb)	alter (verb)
change to the decimal system	remove the ovaries of
change from fractions to decimals	become different in some particular way, without permanently losing one's or its former characteristics or essence
	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to