a word or phrase that has a similar meaning

Question

a word or phrase that is a model of something
a word or phrase that is familiar
a word or phrase that has an opposite meaning which one

Answer 1

The phrases you are looking for can be described as follows:

1. A word or phrase that has a similar meaning - Synonym
2. A word or phrase that is a model of something - Prototype or Example
3. A word or phrase that is familiar - Common or Known
4. A word or phrase that has an opposite meaning - Antonym

If you need more specific examples or context for each, let me know!