Adjective comes from Latin (nōmen) adjectīvum "additional (noun)", a calque of Ancient Greek: ἐπίθετον (ὄνομα), translit. epítheton (ónoma), lit. 'additional (noun)'. In the grammatical tradition of Latin and Greek, because adjectives were inflected for gender, number, and case like nouns (a process called declension), they were considered a subtype of noun. The words that are today typically called nouns were then called substantive nouns (nōmen substantīvum). The terms noun substantive and noun adjective were formerly used in English, but the terms are now obsolete.