Read the paragraphs from "lather and nothing else."

he came in without a word. i was stropping my best razor. and when i recognized him, i started to shake. but he did not notice. to cover my nervousness, i went on honing the razor. i tried the edge with the tip of my thumb and took another look at it against the light.

meanwhile he was taking off his cartridge-studded belt with the pistol holster suspended from it. he put it on a hook in the wardrobe and hung his cap above it. then he turned full around toward me and, loosening his tie, remarked, "it’s hot as the devil, i want a shave.” with that he took his seat.

which words contribute to the tense mood of this passage?

shake; nervousness
recognized; razor
light; suspended
loosening; shave