The Spanish language uses adjectives in a similar way to English and most other Indo-European languages. Spanish adjectives usually go after the noun they modify, and they agree with what they refer to in terms of both number (singular/plural) and gender (masculine/feminine).
Spanish adjectives are very similar to nouns, and often interchangeable with them. A bare adjective can take an article and be used in the same place as a noun (where English would require nominalization using the pronoun one(s)). For example: