This is the 16th most frequent Spanish word.
esta
"Esta" means "this" (feminine) or is the third-person singular form of "estar" (is).
In this context, "esta" is a demonstrative adjective describing the noun "casa" (house), specifying that it is nearby or being referred to specifically.
Esta casa es muy grande.
This house is very big.
Here, "está" is the third-person singular present tense of the verb "estar," used to express temporary states or emotions.
Ella está muy contenta con el regalo.
She is very happy with the gift.
In this example, "esta" is used as a demonstrative adjective to specify the noun "pregunta" (question), indicating a reference to a particular question.