ashcan
background
bacteria
bin
biology
blood
care
contaminated
cotton
covered
danger
dangerous
destroy
dirty
disposable
disposal
dustbin
equipment
garbage
gauze
glove
health
hospital
ill
infect
infectious
medical
medicine
messy
patient
plastic
red
residual
risk
rubbish
safety
sick
stained
thailand
tool
trash
unclean
veil
waste
wool