absence
cafeteria
canteen
care
catering
center
chair
chairs
classroom
cookhouse
corona
corona virus
coronavirus
covid
covid19
daycare
dining
diningroom
disease
eating
education
empty
furnishing
furniture
kindergarten
lunchroom
ncov
nonattendance
nursery
preschool
refectory
room
school
selfservice
table
vacant
vacuous
vacuousness
vacuum
virus
void
wuan