In Spanish, articles are words that go before a noun and help to define it in a better way. Articles vary to match gender and number of nouns. There are definite and indefinite articles in Spanish, just like in English. However, articles in Spanish are further defined depending on the noun in question.

Definite articles in Spanish are used to refer to unique items and also to introduce a noun when used in a general sense. They are used when speaking about a noun whose identity is known to the speaker or reader. The definite articles in Spanish are: el, la, lo, los, and las. El is used before masculine singular nouns, la is used before feminine singular nouns, los is used with masculine plural words, and las is used with feminine plural words. Lo is used before a singular noun that is abstract or unknown.

Here is a summary of the definite articles in Spanish:

• El: masculine singular
• La: feminine singular
• Lo: singular, abstract or unknown
• Los: masculine plural
• Las: feminine plural

It is important to note that all Spanish nouns (including words for things) are either masculine or feminine, and they can also be either singular or plural. Therefore, the definite article in Spanish needs to be adjusted depending on the gender and number of the noun.