Today languages are classified based on the method of comparative linguistics rather than their typological features.

Other typological features: 1.

Agglutination is a typological feature and does not imply a linguistic relation, but there are some families of agglutinative languages.

A correlation between allele frequencies and linguistic typological features has been recently discovered, supporting the latter hypothesis.

Gaelic shares with other Celtic languages a number of interesting typological features:

Nevertheless, there are certain typological features in common, due to continuous contact between the different families.

Neighbouring languages across these families, though presumed unrelated, often have similar typological features, which are believed to have spread by diffusion.

Head-marking patterns are found in other parts of Nawat syntax too, so the language shows consistency for this typological feature.

The Tai languages were included on the basis of vocabulary and typological features shared with Chinese.

The atlas provides information on the location, linguistic affiliation and basic typological features of a great number of the world's languages.