different between hydrozoan vs siphonophore

English

Hydrozoa +? -an

hydrozoan (plural hydrozoans)

Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals, and siphonophores.

From siphono- +? -phore.

siphonophore (plural siphonophores)

(zoology) Any of various transparent marine hydrozoans, of the order Siphonophorae, that float or swim as colonies of polyps.
- 2017, Derek J Skillings, ‘Life is not easily bounded’, Aeon, 24 October:
  Is an individual hydra polyp analogous to an entire siphonophore colony – or is it more like a member of that colony?

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