germs, bacteria, virus
eye glasses, glasses, girl
mining, drill cores, boxes
crash test, collision, rear-end collision
crash test, collision, rear-end collision
atoms, molecules, chemistry
lab, experiment, test
yes no, choice, survey
laboratory, chemistry, microscope
diabetes, icon, glucose
running, pet, walk
barefoot, pebble, foot
algae bloom, windows wallpaper, algae farm
letter tiles, mac wallpaper, desktop backgrounds
