illustration-n; 4 Senses

Sense Number 1: artwork that supplements text, often fictional text

Commentary: ILLUSTRATION[+entity][+artifact][+representation][+visual][+flat][+artistic][+supplemental]

She is known for her beautiful illustrations of children's books.
The illustrations in these medieval manuscripts incorporate gold leaf.
John submitted several illustrations to the cartoon contest.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: diagrams which visually explain technical information

Commentary: ILLUSTRATION[+entity][+artifact][+representation][+visual][+flat][+diagrammatic][+explanatory]

The illustration on page 32 shows the internal parts of a 4-cylinder combustion engine.
The illustrations in this medical textbook contain a lot of important information about anatomy.
We couldn't read the instructions, which were in Japanese, but we figured out how it worked from the illustrations.

WordNet 3.0 Sense Numbers: 4

Sense Number 3: serving the role as an example or instance of something

Commentary: ILLUSTRATION[+relation][+role][+example]
NOTE: X be illustration, X is not an agent, but is the instance, or example itself
NOTE: illustration's reference in the world is wholly dependent on the context it occurs in, it can refer to anything so long as that thing is playing the role of an instance or example of something.

That accident serves as an important illustration of why a pre-flight checklist is so important.
She referred to John's table manners as an illustration of how not to eat in a public setting.
This building is an excellent illustration of the late Gothic style.

WordNet 3.0 Sense Numbers: 3

Sense Number 4: An agent's act of explaining or exemplifying something

Commentary: ILLUSTRATION[+event][+showing][+explanatory][+exemplification]
NOTE: X's illustration, X is the agent doing the showing, -not- the example (See Sense 3)

The students' enjoyed the teacher's illustration of electromagnetism with iron filings.
Her repeated illustration of the defendant's dishonesty finally convinced the jury of his guilt.
The chef's illustration of how to de-bone a chicken made it look easy.

WordNet 3.0 Sense Numbers: 2