ineluctability vs unavoidability

ineluctability and unavoidability both are nouns.

Word	Noun	Adjective	Verb	Adverb
ineluctability	Yes	No	No	No
unavoidability	Yes	No	No	No

As nouns, ineluctability and unavoidability are synonyms defined as:

ineluctability and unavoidability: the quality of being impossible to avoid or evade

ineluctability (noun)	unavoidability (noun)
the quality of being impossible to avoid or evade	the quality of being impossible to avoid or evade