Spanish 101 Word is a term used to describe basic Spanish words and phrases. The crossword solutions for this term are ERES (4 letters), ESTA (4 letters), and ESA (3 letters). ERES is the Spanish word for 'you are, ' ESTA is the Spanish word for 'this is, ' and ESA is the Spanish word for 'that is.' These three words are some of the most commonly used Spanish words and are essential for anyone learning Spanish.