Chimneystack and Chimney

Chimneystack noun - The part of the chimney that is above the roof; usually has several flues.

Chimney and chimneystack are semantically related. In some cases you can use "Chimney" instead a noun "Chimneystack".

Chimney noun - A vertical flue that provides a path through which smoke from a fire is carried away through the wall or roof of a building.

Chimneystack and chimney are semantically related. Sometimes you can replace term "Chimneystack" with "Chimney", this nouns are similar.