As nouns the difference between terms and gemmology
is that terms is while gemmology is (mineralogy|petrology) the branch of mineralogy that studies mineral gems and petrified gemstones.
terms
English
Noun
(head)
Statistics
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gemmology
Alternative forms
* gemology
Noun
(-)
(mineralogy, petrology) the branch of mineralogy that studies mineral gems and petrified gemstones
Derived terms
* gemmological
* gemmologist