"Una vez por semana" is a phrase which is often translated as "once a week", and "menos" is an adjective which is often translated as "less". Learn more about the difference between "una vez por semana" and "menos" below.
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An adjective is a word that describes a noun (e.g. the big dog).
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g. to run quickly, very tired).
A preposition is a word that indicates the relationship between a noun and another word (e.g. He ran through the door.).
A masculine noun is used with masculine articles and adjectives (e.g. el hombre guapo, el sol amarillo).
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