irrational vs unreasoning

irrational is a noun but unreasoning is not a noun.

Word	Noun	Adjective	Verb	Adverb
irrational	Yes	Yes	No	No
unreasoning	No	Yes	No	No

irrational (noun)	unreasoning (noun)
a real number that cannot be expressed as a rational number

irrational (adjective)	unreasoning (adjective)
not consistent with or using reason	not based on reason or evidence
real but not expressible as the quotient of two integers