steriliser vs sterilizer

steriliser and sterilizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
steriliser	Yes	No	No	No
sterilizer	Yes	No	No	No

As nouns, steriliser and sterilizer are synonyms defined as:

steriliser and sterilizer: a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments

Other synonyms of steriliser include autoclave.

steriliser (noun)	sterilizer (noun)
a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments	a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments