arm to arm

[ewelina]

Hello,

Is there any specific language term for phrases like that:

arm to arm
hand in hand
face to face
wall-to-wall
mother and child
town and country
church and state

given the fact that these are deprived of any articles?

Ellipsis, collocations...?

Thank you, Ewelina

[Tdol]

They are collocations, and in some cases there could be ellipsiis too, but I don't know of a special term.