line of thought vs cerebration

line of thought and cerebration both are nouns.

Word	Noun	Adjective	Verb	Adverb
line of thought	Yes	No	No	No
cerebration	Yes	No	No	No

As nouns, cerebration is a hypernym of line of thought; that is, cerebration is a word with a broader meaning than line of thought:

line of thought: a particular way of thinking that is characteristic of some individual or group
cerebration: the process of using your mind to consider something carefully

Other hypernyms of line of thought include intellection, mentation, thinking, thought, thought process.

line of thought (noun)	cerebration (noun)
a particular way of thinking that is characteristic of some individual or group	the process of using your mind to consider something carefully