Cases of word usage

1) one of the technical branches of an army (corps)

2) something carefully designed and made for a particular purpose such as an instrument or a small piece of technical equipment (device)

3) a style of a language full of technical or special words (jargon)

4) polytechnic; technical (college) (tech)

5) a technical word, phrase, point etc (technicality)

6) the use of technical skills in industry; the scientific theory, methods, used in technical skills (technology)