Deck and Patio

Deck noun - A flat roofless structure attached to a building.

Patio and deck are semantically related In some cases you can use "Patio" instead a noun "Deck".

Nearby Words: decked, decking, deckle, decker

Patio noun - An open space wholly or partly enclosed (as by buildings or walls).

Deck and patio are semantically related (North American) in porch topic. You can use "Deck" instead a noun "Patio", if it concerns topics such as sun deck.