winter sweet vs oregano

winter sweet and oregano both are nouns.

Word	Noun	Adjective	Verb	Adverb
winter sweet	Yes	No	No	No
oregano	Yes	No	No	No

As nouns, winter sweet and oregano are synonyms defined as:

Other synonyms of winter sweet include marjoram, Origanum vulgare, pot marjoram, wild marjoram.

winter sweet (noun)	oregano (noun)
deciduous Japanese shrub cultivated for its fragrant yellow flowers	pungent leaves used as seasoning with meats and fowl and in stews and soups and omelets
aromatic Eurasian perennial	aromatic Eurasian perennial
dwarf aromatic shrub of Crete
medium-sized shrubby tree of South Africa having thick leathery evergreen leaves and white or pink flowers and globose usually two-seeded purplish black fruits