imagine	imagination
employ	employment
kind	kindness
fiend	friendship
short	shortage
child	childhood
free	freedom
identify	identification
appreciate	appreciation
argue	arugment
develop	development
exist	existence
defend	defence
sign	signature
please	pleasure
react	reaction
prevent	prevention
donate	donation
contribute	contribution
prepare	preparation
treat	treatment
involve	involvement
refer	reference
prefer	preference
interfere	interference
mix	mixture
fail	failure
frustrated	frustration
fascinated	fascination
embarrassed	embarrassment
amused	amusement
creative	creativity
anxious	anxiety
spontaneous	spontaneity
awkward	awkwardness
nervous	nervousness
angry	anger
worried	worry