This document compares and contrasts features of the Spanish and English languages. It discusses the origins of the languages, with Spanish originating from Latin and English having Germanic roots. The alphabets of the two languages are examined, noting differences in vowels and additional letters in Spanish. Variations between formal and informal address are described as requiring different verb forms and pronouns in Spanish. Word order and pronoun elimination are also summarized. The document concludes with a case study of an English language learner named Lola, noting errors that could be attributed to developmental issues or interference from her native Spanish.