Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
geological period | Yes | No | No | No |
Cretaceous | Yes | Yes | No | No |
geological period (noun) | Cretaceous (noun) |
---|---|
a unit of geological time during which a system of rocks formed | the period from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants |
geological period (adjective) | Cretaceous (adjective) |
---|---|
of or relating to or denoting the third period of the Mesozoic era |