eager vs impatient

eager is a noun but impatient is not a noun.

Word	Noun	Adjective	Verb	Adverb
eager	Yes	Yes	No	No
impatient	No	Yes	No	No

eager (noun)	impatient (noun)
a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)

eager (adjective)	impatient (adjective)
having or showing keen interest or intense desire or impatient expectancy	restless or short-tempered under delay or opposition
	(usually followed by `to') full of eagerness