J vs watt second

J and watt second both are nouns.

Word	Noun	Adjective	Verb	Adverb
J	Yes	No	No	No
watt second	Yes	No	No	No

As nouns, J and watt second are synonyms defined as:

J and watt second: a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second

Other synonyms of J include joule.

J (noun)	watt second (noun)
the 10th letter of the Roman alphabet	a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second