Hopefully you already know that adjectives, or "describing words", usually come AFTER the noun [see Adjectives usually go AFTER nouns (adjective position)], and you also know these exceptions: Short and common adjectives that go BEFORE nouns (adjective position).
Here are other types of adjectives that are also placed BEFORE the noun:
1. Adjectives qualifying a proper noun (starting with a capital letter):
2. Numerical adjectives
Note that cardinal numbers (un, cinq, dix, cent...) never change.