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"Less" is a form of "less", an adverb which is often translated as "menos". "Lesser" is an adjective which is often translated as "menor". Learn more about the difference between "lesser" and "less" below.
less(
lehs
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
A pronoun is a word that stands in for a noun (e.g., she).
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).