phytology vs etiolation

phytology and etiolation both are nouns.

Word	Noun	Adjective	Verb	Adverb
phytology	Yes	No	No	No
etiolation	Yes	No	No	No

phytology (noun)	etiolation (noun)
the branch of biology that studies plants	(botany) the act of causing a plant to develop without chlorophyll by growing it without exposure to sunlight
	the act of weakening by stunting the growth or development of something
	a pale and sickly appearance