1 to use

2 to employ

3 to apply

4 to make use of

1 to use

2 to employ

3 to have to

4 to eat or drink

5 expense or outlay

6 usefulness

7 hence

8 therefore

1 to register

2 to log in

1 need not

1 to enjoy (i.e. have the use or benefit of)

1 to do two things at once (idiom)

2 to multitask

3 to divide one's attention

1 reaching heaven in a single bound (idiom); (esp. with negative: don't expect) instant success

1 to have an ulterior motive (idiom)

1 to have no other use or purpose (idiom)

1 obstinate and self-opinionated (idiom)