troy weight vs troy

troy weight and troy both are nouns.

Word	Noun	Adjective	Verb	Adverb
troy weight	Yes	No	No	No
troy	Yes	No	No	No

As nouns, troy weight and troy are synonyms defined as:

troy weight and troy: a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains

troy weight (noun)	troy (noun)
a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains	a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains