Dialects of the same language typically share a common grammar, while pronunciation, vocabulary, and usage may vary.

A dialect continuum is a gradual transition between dialects, where neighboring dialects share many similarities and gradually change as one moves from one region to another.

Southern American English is a regional dialect spoken in the southern United States, characterized by distinct pronunciation, vocabulary, and grammatical features.

Geographic isolation is the primary factor contributing to the formation of language dialects, as it allows for the development of unique linguistic features within a particular region.

Standard English is a dialect of English that has gained widespread recognition and usage as the official language of many countries and international organizations.

Standardization is the process by which a dialect becomes the standard language of a region, typically through official recognition and use in education, government, and media.

Spanglish is a language dialect that has been influenced by both Spanish and English, particularly in regions where these languages are spoken in close proximity.

Dialectology is the study of language dialects, focusing on their geographic distribution, linguistic features, and social and cultural factors that influence their development.

Gaelic Irish is an example of a language dialect that has been preserved through oral tradition, particularly in rural areas of Ireland, despite the widespread use of English in the country.

Convergence is the process by which a language dialect loses its distinct features and becomes more similar to the standard language, often due to increased communication and interaction between speakers of different dialects.

Tok Pisin is an example of a language dialect that has been influenced by migration and cultural exchange, particularly in Papua New Guinea, where it has become a lingua franca among speakers of different native languages.

An isogloss is a boundary between language dialects, marking the geographic limit of a particular linguistic feature or variation.

Biblical Hebrew is an example of a language dialect that has been influenced by religious texts and practices, particularly the Hebrew Bible (Old Testament).

Language shift refers to the adoption of a new language by a community, typically due to factors such as migration, colonization, or economic and social changes.

Lingua Franca is an example of a language dialect that has been influenced by trade and commerce, particularly in the Mediterranean region, where it was used as a common language of communication among merchants and sailors of different linguistic backgrounds.