Cases of word usage

1) an apparatus used for holding things together tightly by means of a screw (clamp)

2) to fasten or tighten (something) with a screw (screw)

3) (a length of) cotton, silk, wool etc, especially for use in sewing and weaving; something long and thin like a thread; a line of thought or action (connecting parts of a story etc); the spiral ridge round a screw or bolt; to pass a thread through the eye of (a needle) (thread)

4) to remove a screw or screws from (something) (unscrew)

5) washing machine; dishwasher; a small flat ring of metal, plastic etc, used for making a joint or screw tight (washer)