spike vs Zea mays

spike and Zea mays both are nouns.

Word	Noun	Adjective	Verb	Adverb
spike	Yes	No	Yes	No
Zea mays	Yes	No	No	No

spike (noun)	Zea mays (noun)
sports equipment consisting of a sharp point on the sole of a shoe worn by athletes	tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times
a large stout nail
any holding device consisting of a rigid, sharp-pointed object
a long, thin sharp-pointed implement (wood or metal)
a sharp-pointed projection along the top of a fence or wall (or a dinosaur)
a very high narrow heel on women's shoes
each of the sharp points on the soles of athletic shoes to prevent slipping (or the shoes themselves)
a transient variation in voltage or current
a sharp rise followed by a sharp decline
(botany) an indeterminate inflorescence bearing sessile flowers on an unbranched axis
fruiting spike of a cereal plant especially corn

spike (verb)	Zea mays (verb)
add alcohol to (beverages)
bring forth a spike or spikes
manifest a sharp increase
pierce with a sharp stake or point
secure with spikes
stand in the way of