Concept album and Record album

Concept album noun - An album whose recordings are unified by some theme (instrumental or lyrical or narrative or compositional).

Record album and concept album are semantically related. In some cases you can use "Record album" instead a noun phrase "Concept album".

Record album noun - One or more recordings issued together; originally released on 12-inch phonograph records (usually with attractive record covers) and later on cassette audiotape and compact disc.

Concept album and record album are semantically related. Sometimes you can replace phrase "Concept album" with "Record album", this phrases are similar.