Bryozoan and Invertebrate

Bryozoan noun - Sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding.

Invertebrate and bryozoan are semantically related. In some cases you can use "Invertebrate" instead a noun "Bryozoan".

Invertebrate noun - Any animal lacking a backbone or notochord; the term is not used as a scientific classification.

Bryozoan and invertebrate are semantically related. Sometimes you can replace term "Bryozoan" with "Invertebrate", this nouns are similar.