What was the motive behind his actions?

His speech was full of similes, captivating the audience.

She played the piano with her fingertips.

His poem is filled with beautiful metaphors.

In the old days, people used whale oil as fuel for lamps.

I start my day every morning by drinking plain hot water.

I always add chili oil to my ramen.

This oil solution is used to reduce friction in machinery.

This organism is a very rare type.

He is trying to get a promotion by saying flattering words to his boss.