wild marjoram vs oregano

wild marjoram and oregano both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild marjoram	Yes	No	No	No
oregano	Yes	No	No	No

As nouns, wild marjoram and oregano are synonyms defined as:

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

wild marjoram (noun)	oregano (noun)
aromatic Eurasian perennial	pungent leaves used as seasoning with meats and fowl and in stews and soups and omelets
	aromatic Eurasian perennial