vocational college
Refers to a post-secondary institution that provides specialized vocational or technical training, similar to a trade school or career college.
He is studying cooking at a vocational college.
専門学校 is a more common term for vocational school; 専門学院 is less frequent and may imply a slightly more formal or specialized institution.
Compound of 専門 (specialty) and 学院 (academy/institute). The exact historical derivation is uncertain, but the term follows standard Sino-Japanese word formation.