Hierarchical relation
Shorthand for is-a-type-of.
• cat is-a predator
• hunger is-a instinct

Partitive relation
A component/member of a whole.
• branch is-part-of tree
• bird is-part-of flock

Antonym relation
One excludes the other.
• warm is-opposite-of cold
• black is-opposite-of white

Perceptual relation
An observable quality of something.
• red is-property-of blood
• hot is-property-of fire

Associative relation
Mental affiliation between concepts.
• heron is-related-to fish
• Einstein is-related-to relativity

Synonymous relation
Two concepts that are equivalent.
• forest is-same-as woods
• sea is-same-as ocean

Relations between properties
Rules between the concepts that are used in is-property-of relations in other contexts.
• dangerous is-opposite-of safe
• pleasant is-related-to calm

Relating to fauna and flora
The natural world not involving human interference.
• flower is-a plant
• red is-property-of rose

Relating to human culture
Man-made objects, human society and reasoning.
• long is-property-of railroad
• security is-related-to freedom

Relating to the location of places
Continents, countries, cities, structures, ...
• Italy is-a country
• Milan is-part-of Italy

Relating to the past
Rules that are true in a historical context.
• knight is-part-of Middle Ages

Relating to human emotion
How humans feel, behave and express themselves.
• warm is-property-of joy
• smile is-a facial expression

Relating to communication
Books, music, movies, websites, games, commercials, ...
• Star Wars is-a movie
• science fiction is-a genre

Relating to human individuals
Interesting and influential persons.
• pain is-related-to Jesus
• Einstein is-related-to relativity

Relating to visual communication
Colors, typefaces, pixel effects, ...
• indigo is-a purple
• bold is-property-of heading