Diatom and Phytoplankton

Diatom noun - Microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica.

Phytoplankton and diatom are semantically related. In some cases you can use "Phytoplankton" instead a noun "Diatom".

Nearby Word: diatomic

Phytoplankton noun - Photosynthetic or plant constituent of plankton; mainly unicellular algae.

Diatom and phytoplankton are semantically related. Sometimes you can replace term "Diatom" with "Phytoplankton", this nouns are similar.