thyme vs common thyme

thyme and common thyme both are nouns.

Word	Noun	Adjective	Verb	Adverb
thyme	Yes	No	No	No
common thyme	Yes	No	No	No

As nouns, common thyme is a hyponym of thyme; that is, common thyme is a word with a more specific, narrower meaning than thyme:

thyme: any of various mints of the genus Thymus
common thyme: common aromatic garden perennial native to the western Mediterranean; used in seasonings and formerly as medicine

Other hyponyms of thyme include Thymus vulgaris, creeping thyme, Thymus serpyllum, wild thyme.

thyme (noun)	common thyme (noun)
leaves can be used as seasoning for almost any meat and stews and stuffings and vegetables	common aromatic garden perennial native to the western Mediterranean; used in seasonings and formerly as medicine
any of various mints of the genus Thymus