As nouns the difference between terms and orpheite
is that terms is while orpheite is (mineralogy) a trigonal-hexagonal scalenohedral mineral containing aluminum, hydrogen, lead, oxygen, phosphorus, and sulfur.
terms
English
Noun
(head)
Statistics
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orpheite
English
Noun
(mineralogy) A trigonal-hexagonal scalenohedral mineral containing aluminum, hydrogen, lead, oxygen, phosphorus, and sulfur.
References
* Orpheite in the Mineralogy Database: [http://webmineral.com/data/Orpheite.shtml]