borrow and lend

Borrowing is taking (for a time).

• Can I borrow your bicycle? (not Can I lend your bicycle?)

You borrow something from somebody.

• I borrowed a pound from my brother. (not I borrowed my brother a pound.)

Lending (AmE also loaning) is giving (for a time). You lend something to somebody, or lend somebody something.

• I lent my coat to Josh, and I never saw it again.
• Lend me your comb for a minute, will you? (not Borrow me your …)

note

For lend in passive structures, (see here).