Simile vs Metaphor

"I drew in great lungfuls of biting air, blowing it out again in little silver trumpets of condensation."
(metaphor)

"Tendrils of raw fog floated up from the ice like agonized spirits departing their bodies"
(simile)

"The cold air was a hazy writhing mist."
(metaphor)

"Up and down the long gallery I flew, the silver blades of my skates making the sad scraping sound of a butcher's knife being sharpened energetically on stone."
(that's  imagery, --except with sound)

from I Am Half-Sick of Shadows  by Alan Bradley

2nd photo from tuckamoredew dot wordpress