idea-n; 6 Senses

Sense Number 1: a concept, a mental construct

Commentary: IDEA[+entity][+abstract][+concept][+perceptual/+logical]
NOTE: refers to concepts in the abstract, does not imply the opinion of a specific individual (Sense 2)
NOTE: 'idea BE X, 'idea of X' -> X = idea

Examples:
Many important ideas in quantum mechanics can only be understood mathematically.
This history provides a clear idea of the perils of sea travel during the 18th century.
For Plato, ideas are the true changeless forms of which objects in the world are imperfect copies.
The idea of mutable causality is difficult to grasp.

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: an opinion or viewpoint held by an individual

Commentary: IDEA[+state][+mental][+opinion]
NOTE: implies a specific agent who advocates the opinion or viewpoint.
NOTE: 'X has idea, X get/reject idea' -> X = sentient agent

Examples:
Where did people get such ridiculous ideas about sharks?
They have very traditional ideas about marriage.
The firm has rejected the idea of outsourcing their data management.
His idea of a good dinner is a frozen pizza and a bottle of beer.

Mappings:
WordNet 3.0 Sense Numbers: 3

Sense Number 3: an estimate or calculation

Commentary: IDEA[+quantity][+estimate]
NOTE: implies or specifies a quantity of something, e.g., time, money
NOTE: occurs in phrases 'an idea of X' -> X = some quantity

Examples:
The guide has an excellent idea of how long the tour will last.
They haven't given us any idea of how much it will cost.
Let me look over the plans so I can give you a rough idea of how long it might take.

Mappings:
WordNet 3.0 Sense Numbers: 4

Sense Number 4: an intention, objective or purpose

Commentary: IDEA[+state][+mental][+objective]
NOTE: implies the intention or objective of a specific agent.
NOTE: idea of X, idea to X -> X = objective

Examples:
We started our trip at dawn with the idea of beating the thundering hordes on the freeway.
What's the big idea of barging in on our private meeting?
Our idea was to surprise John at the office, but then he saw us in the elevator on the way up.
She had no idea to ever tell her mother about the embarrassing incident.

Mappings:
WordNet 3.0 Sense Numbers: 2

Sense Number 5: an artistic theme or motif

Commentary: IDEA[+form][+artistic][+theme]

Examples:
Beethoven develops this musical idea throughout the first movement.
I love the whimsical ideas expressed through her wavy ceramic figurines.

Mappings:
WordNet 3.0 Sense Numbers: 5

Sense Number 6: Placeholder: Do Not Choose

Examples:

Mappings:
WordNet 0.0 Sense Numbers: Placeholder