Spot

bouton

(pimple, pustule)

endroit

(location or area)

peu

(small amount)

tache

(a round or irregular patch of a different color)

zone

(location or area)

détacher

(remove, or attempt to remove, a stain)

détecter

(see, pick out, notice or identify)

repérer

(see, pick out, notice or identify)

s'apercevoir

(see, pick out, notice or identify)

tacher

(stain; leave a spot)

trouver

(see, pick out, notice or identify)