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"La mantequilla" is a form of "mantequilla", a noun which is often translated as "butter". "Por favor" is a phrase which is often translated as "please". Learn more about the difference between "la mantequilla" and "por favor" below.
la mantequilla()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
por favor()
A phrase is a group of words commonly used together (e.g., once upon a time).
