The Walloon language is spoken in parts of Belgium.

He is learning the Coptic language of Egypt.

He attacked me using hostile language.

His role is to fulfill his responsibilities as a leader.

Euclidean geometry forms the foundation of geometry.

I am majoring in auditory phonetics at university.

Articulatory phonetics is a study about the production of speech sounds.

Acoustic phonetics is the study of the physical properties of speech.

I am majoring in microbiology at university.

He is interested in geometrical shapes.