Intercom speaker and Speaker system

Intercom speaker noun - The loudspeaker on an intercom or public address system.

Speaker system and intercom speaker are semantically related. In some cases you can use "Speaker system" instead a noun phrase "Intercom speaker".

Speaker system noun - Electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance.

Intercom speaker and speaker system are semantically related. Sometimes you can replace phrase "Intercom speaker" with "Speaker system", this phrases are similar.