Kök is celebrating his birthday today.

The roots of this plant extend deep.

The origin of this word comes from Latin.

Tolerance and understanding are important among people of different ethnic origins.

Fir trees grow in high mountains.

Etymology is a discipline that examines the history and origin of words.

Cognateness is an important concept in linguistics.

Turkish and Azerbaijani are cognate languages.

These two words are cognate words.