adult
alone
bench
blue
concept
contemplate
contemplation
countryside
depressed
depression
despair
emotion
failure
human
lake
landscape
life
loneliness
lonely
lonely man
male
man
nature
one
pain
person
problem
quiet
rural
sad
sadness
seat
serene
serenity
silence
silhouette
sitting
solitaire
solitude
sorrow
thinking
tree
trouble
unhappy
upset
water
wood
worry