Structural convergence occurs when two or more languages come into contact and begin to influence each other's grammatical structures, resulting in similarities between the languages.

Structural convergence can be observed in the development of similar grammatical structures in English and French, such as the use of the definite and indefinite articles and the placement of adjectives before nouns.

Structural divergence occurs when two or more languages come into contact and begin to develop different grammatical structures, resulting in differences between the languages.

Structural divergence can be observed in the development of different grammatical structures in English and Chinese, such as the use of prepositions in English and the use of particles in Chinese.

Structural convergence can be influenced by a variety of factors, including geographical proximity, political and economic ties, and cultural exchange.

Structural divergence can be influenced by a variety of factors, including geographical isolation, political and economic separation, and cultural isolation.

Structural convergence and structural divergence can occur simultaneously in different aspects of a language. For example, a language may borrow words from another language while also developing new grammatical structures that are distinct from the other language.

The impact of structural convergence on language learning depends on the individual learner. For some learners, the similarities between two languages can make it easier to learn the new language, while for others, the differences between the languages can make it more difficult.

The impact of structural divergence on language learning depends on the individual learner. For some learners, the differences between two languages can make it more challenging to learn the new language, while for others, the distinct features of the new language can be intriguing and motivating.

Structural convergence and structural divergence can both contribute to the formation of new languages. Structural convergence can lead to the development of a new language that is a blend of two or more existing languages, while structural divergence can lead to the development of a new language that is distinct from its parent language.

A Sprachbund is a group of languages that share similar structural features, even though they may not be related to each other. Sprachbunds can arise through structural convergence or through the influence of a dominant language on other languages in the area.

The Balkan Sprachbund is a group of languages spoken in the Balkans region of Europe that share a number of structural features, such as the use of postpositions and the lack of grammatical gender.

Structural convergence involves changes in the grammatical structure of a language, while language assimilation involves the adoption of one language by another, often resulting in the loss of the original language.

Structural divergence involves changes in the grammatical structure of a language, while language split involves the division of a language into two or more distinct languages, often due to geographical isolation or political factors.

Structural convergence and structural divergence can occur in the same language, as different aspects of the language may undergo different changes over time. For example, a language may borrow words from another language while also developing new grammatical structures that are distinct from the other language.