What's the difference between byre and cowbarn?

Byre

Definition:

Example Sentences:

(1) Most cattle seemed to rid themselves of infection during the following months whether or not they were at pasture, housed in cubicles or in byres.
(2) We see a cold day, trees nearly bare, a low cow byre or labourer's cottage with red-tiled roof.
(3) On Grange Farm, about 4 miles from Balcombe, 69 panels have just gone up on the south-facing, second-storey roof of a large byre.
(4) But it also has its share of boarded-up shops, especially away from the buzz of Byres Road and its trendy bars and restaurants.