psychology (noun)
psychologist
simple (noun)
simplicity
sober (noun)
sobriety
pay (noun)
payer or payee
amazing (noun)
amazement
populate (noun)
population
orate (noun)
orator
enter (noun)
entry
secret (noun)
secrecy
signify (noun)
significance
member (noun)
membership
likely (noun)
likelihood
break (noun)
breakage
optimist (noun)
optimism
useful (noun)
usefulness
precise (noun)
precision
depend (noun)
dependence
renew (noun)
renewal
bored (noun)
boredom
close (noun)
closure