The difference between Guinea pig and Rodent

When used as nouns, guinea pig means a tailless rodent of the the family caviidae and the genus cavia, with short ears and larger than a hamster, whereas rodent means a mammal of the order rodentia, characterized by long incisors that grow continuously and are worn down by gnawing.

Rodent is also adjective with the meaning: gnawing.

check bellow for the other definitions of Guinea pig and Rodent

  1. Guinea pig as a noun:

    A tailless rodent of the the family Caviidae and the genus Cavia, with short ears and larger than a hamster; the species Cavia porcellus is often kept as a pet.

    Examples:

    "synonyms: cavy q1=formal name"

  2. Guinea pig as a noun:

    A rodent of any of several species within the family Caviidae.

  3. Guinea pig as a noun (figuratively):

    A living experimental subject.

    Examples:

    "synonyms: lab rat"

    "He became a human guinea pig and was paid by the company."

  4. Guinea pig as a noun (dated, slang):

    A professional company director, without time or real qualifications for the duties.

  5. Guinea pig as a noun (obsolete):

  1. Rodent as a noun:

    A mammal of the order Rodentia, characterized by long incisors that grow continuously and are worn down by gnawing.

  2. Rodent as a noun (dated, bulletin board system slang, leet, pejorative):

    A person lacking in maturity, social skills, technical competence or intelligence; lamer.

  1. Rodent as an adjective:

    Gnawing; biting; corroding; applied to a destructive variety of cancer or ulcer.

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