Idea
Subclasses
Theory
Supposition or system of ideas intended to explain something
Proposition
Bearer of truth or falsity
Construct (philosophy)
Object whose existence depends upon a subject's mind
thought
form created in the mind, instance of thinking
Scientific hypothesis
idea that proposes a tentative explanation about a phenomenon or a narrow set of phenomena observed in the natural world (primary features of a scientific hypothesis: falsifiability, testability)
new idea
idea that is distinct from previous ones