spit vs ptyalin

spit and ptyalin both are nouns.

Word	Noun	Adjective	Verb	Adverb
spit	Yes	No	Yes	No
ptyalin	Yes	No	No	No

spit (noun)	ptyalin (noun)
the act of spitting (forcefully expelling saliva)	an amylase secreted in saliva
a skewer for holding meat over a fire
a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth; moistens the mouth and starts the digestion of starches
a narrow strip of land that juts out into the sea

spit (verb)	ptyalin (verb)
expel or eject (saliva or phlegm or sputum) from the mouth
utter with anger or contempt
drive a skewer through
rain gently