• language
• leid (Scottish, chiefly poetic)
• lingo (colloquial)
• speech    [⇒ thesaurus]
• tongue (metonymically)

Creole and pidgin

• creole    [⇒ thesaurus]
• pidgin

Lingua franca

• lingua franca
• link language

Dead vs. living

• dead language
• extinct language
• heritage language
• living language
• endangered language

Natural vs. other

• natural language
• constructed language
• sign language
• computer language    [⇒ thesaurus]

Source of acquisition

• birthtongue
• first language
• L1
• mother language
• mother tongue
• native language
• native tongue
• vernacular
• vulgate
• father tongue
• L2
• second language

Language families and genetic groups

• Sino-Tibetan language    [⇒ thesaurus]
• Indo-European language
• Romance language    [⇒ thesaurus]
• Slavic language    [⇒ thesaurus]
• Germanic language    [⇒ thesaurus]
• Celtic language    [⇒ thesaurus]

Language typology

• isolating language    [⇒ thesaurus]
• analytic language    [⇒ thesaurus]
• synthetic language    [⇒ thesaurus]
• fusional language    [⇒ thesaurus]
• agglutinative language    [⇒ thesaurus]
• polysynthetic language    [⇒ thesaurus]
• inflected language

• medium

Larger parts of language

• acrolect
• argot
• basilect
• cant
• chronolect
• cryptolect    [⇒ thesaurus]
• dialect
• ecolect
• ethnolect
• idiolect
• idiom
• isolect
• jargon    [⇒ thesaurus]
• lect
• matrilect
• mesilect
• mesolect
• mimolect
• paralect
• parlance
• patois
• patrilect
• similect
• slang
• sociolect
• topolect
• xenolect

Elements of language

• expression
• grammar
• phrase    [⇒ thesaurus]
• sign
• statement    [⇒ thesaurus]
• symbol
• term    [⇒ thesaurus]
• vocabulary
• word    [⇒ thesaurus]
• wording    [⇒ thesaurus]

• language family

• languoid