decide vs regularise

decide and regularise both are verbs.

Word	Noun	Adjective	Verb	Adverb
decide	No	No	Yes	No
regularise	No	No	Yes	No

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

decide: reach, make, or come to a decision about something
regularise: bring into conformity with rules or principles or usage; impose regulations

decide (verb)	regularise (verb)
reach, make, or come to a decision about something	make regular or more regular
bring to an end; settle conclusively	bring into conformity with rules or principles or usage; impose regulations
cause to decide
influence or determine