different between hydrocarbon vs corannulene

English

hydro- +? carbon

hydrocarbon (plural hydrocarbons)

(organic chemistry) A compound consisting only of carbon and hydrogen atoms.
Hyponyms: alkane, alkene, alkyne, cycloalkane, cycloalkene, arene

corannulene (plural corannulenes)

(organic chemistry) Any of a group of polycyclic aromatic hydrocarbons (circulenes) containing at least one ring of five fused benzene rings and thus having a non-planar form reminiscent of a bowl that is a fragment of buckminsterfullerene; a buckybowl.
(organic chemistry) The parent compound of this group

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