What is the simile in hobbit

"They used to go up like great lilies and snapdragons and laburnums of fire and hang in the twilight all evening" (page 5)

"the door opened onto a tub-shaped hall like a tunnel" (page 1)

"it had a perfectly round door like a porthole" (page 1)

"as he came hurtling down like a thunderbolt" (page 107 ch 6)

lots of others ... similes have the words "as" and "like" to compare one thing to something else to give emphasis to the description.