jeweler's loupe vs loupe

jeweler's loupe and loupe both are nouns.

Word	Noun	Adjective	Verb	Adverb
jeweler's loupe	Yes	No	No	No
loupe	Yes	No	No	No

As nouns, jeweler's loupe and loupe are synonyms defined as:

jeweler's loupe and loupe: small magnifying glass (usually set in an eyepiece) used by jewelers and horologists

jeweler's loupe (noun)	loupe (noun)
small magnifying glass (usually set in an eyepiece) used by jewelers and horologists	small magnifying glass (usually set in an eyepiece) used by jewelers and horologists