basis vs explanation

basis and explanation both are nouns.

Word	Noun	Adjective	Verb	Adverb
basis	Yes	No	No	No
explanation	Yes	No	No	No

basis (noun)	explanation (noun)
the fundamental assumptions from which something is begun or developed or calculated or explained	thought that makes something comprehensible
a relation that provides the foundation for something	a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc.
the most important or necessary part of something	the act of explaining; making something plain or intelligible