decay vs physics

decay and physics both are nouns.

Word	Noun	Adjective	Verb	Adverb
decay	Yes	No	Yes	No
physics	Yes	No	No	No

decay (noun)	physics (noun)
the organic phenomenon of rotting	the science of matter and energy and their interactions
a gradual decrease; as of stored charge or current	the physical properties, phenomena, and laws of something
the process of gradually becoming inferior
the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
an inferior state resulting from the process of decaying

decay (verb)	physics (verb)
fall into decay or ruin
lose a stored charge, magnetic flux, or current
undergo decay or decomposition