Strengths are the things that someone is good at or the things that are good about something.
Strengths are usually positive things that help someone or something be better.
Examples:
One of my strengths is running fast.
She has many strengths, like drawing and singing.
His strengths help him do well in school.
The cat's strength is catching mice.
My strengths are as big as a mountain.
The superhero's strengths help him save the day.