callus vs phytology

callus and phytology both are nouns.

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

callus (noun)	phytology (noun)
(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid	the branch of biology that studies plants
bony tissue formed during the healing of a fractured bone
an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)

callus (verb)	phytology (verb)
form a callus or calluses
cause a callus to form on