different between cephalopod vs hectocotylus

English

From French céphalopode, from Ancient Greek ?????? (kephal?, “head”) + ????? (podós), genitive singular of ???? (poús, “foot, leg”).

cephalopod (plural cephalopods)

Any mollusc, of the class Cephalopoda, which includes squid, cuttlefish, octopus, nautiloids etc.

From New Latin, corresponding to hecto- +? Ancient Greek ?????? (kotúl?, “small cup”).

hectocotylus (plural hectocotyli)

(zoology) A modified arm of any of several male cephalopods that functions as a reproductive organ by transfering sperm to the mantle of the female. [from 19th c.]
- 2018, Elsa Panciroli, The Guardian, 24 January:
  The hectocotylus, like many other genitals, is made of soft tissues which are unlikely to be fossilised.

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