Bonjour,
Concrètement la metaphor est une métaphore et la simile est une comparaison simple. Voilà un exemple de réponse à cette question:
Hobby : running
When I put my sneakers on and start running in the park, I become a wild bird flying across the jungle. It is a very thrilling activity. Running is also, like boxing or ice-skating, a physical challenge. You must keep going despite wanting to stop.