Red laver and Red algae

Red laver noun - Edible red seaweeds.

Red algae and red laver are semantically related. In some cases you can use "Red algae" instead a noun phrase "Red laver".

Red algae noun - Marine algae in which the chlorophyll is masked by a red or purplish pigment; source of agar and carrageenan.

Red laver and red algae are semantically related. Sometimes you can replace phrase "Red laver" with "Red algae", this phrases are similar.