Algae and Chlorophyte

Algae noun - Primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves.

Chlorophyte and algae are semantically related. In some cases you can replace term "Chlorophyte" with "Algae", this nouns are similar.

Chlorophyte noun - Algae that are clear green in color; often growing on wet ricks or damp wood or the surface of stagnant water.

Algae and chlorophyte are semantically related. You can use "Algae" instead a noun "Chlorophyte".