Dulse and Red algae

Dulse noun - Coarse edible red seaweed.

Red algae and dulse are semantically related. In some cases you can use "Red algae" instead a noun "Dulse".

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

Dulse and red algae are semantically related. Sometimes you can replace term "Dulse" with "Red algae", this terms are similar.