Oenology n. : Knowledge of wine, scientific or practical.

Example:
Whats the difference between viticulture & Oenology?

Taxonomy
Viticulture & oenology, free encyclopedia, wine, oenologists, qualification, wine production, oenologist, search, free dictionary, enology, science, subfield, designation, training programmes, research centres, outdoors, oinos, logos.

Defination from the web:
Oenology, œnology (BrE), or enology (AmE) is the science and study of all aspects of wine and winemaking except vine-growing and grape-harvesting, ... Viticulture & oenology" is a common designation for training programmes and research centres that include both the "outdoors" and " ...