surjective function vs onto function

surjective function and onto function both are nouns.

Word	Noun	Adjective	Verb	Adverb
surjective function	Yes	No	No	No
onto function	Yes	No	No	No

As nouns, surjective function and onto function are synonyms defined as:

surjective function and onto function: a mathematical function that is an onto mapping.

Other synonyms of surjective function include surjection.

surjective function (noun)	onto function (noun)
a mathematical function that is an onto mapping.	a mathematical function that is an onto mapping.