frankincense vs olibanum

frankincense and olibanum both are nouns.

Word	Noun	Adjective	Verb	Adverb
frankincense	Yes	No	No	No
olibanum	Yes	No	No	No

As nouns, frankincense and olibanum are synonyms defined as:

frankincense and olibanum: an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation

Other synonyms of frankincense include gum olibanum, thus.

frankincense (noun)	olibanum (noun)
an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation	an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation