frankincense — an aromatic gum resin from various Asian and African trees of the genus Boswellia, especially B. carteri, used chiefly for burning as incense in religious or ceremonial practices, in perfumery, and in pharmaceutical and fumigating preparations.
manifest — readily perceived by the eye or the understanding; evident; obvious; apparent; plain: a manifest error.
manifold — of many kinds; numerous and varied: manifold duties.
Four-or-more syllable rhymes
casualness — happening by chance; fortuitous: a casual meeting.