blank
business
challenge
connect
connection
connective
empty
finish
finishing
fit
game
hole
idea
incomplete
jig
jigsaw
jigsaw piece
jigsaw puzzle
join
key
link
match
metaphor
missing
part
piece
pieces
playing
problem
problems
puzzle
puzzled
puzzles
puzzling
red
simplicity
single
solution
solutions
solve
solving
strategy
success
symbol
toy
unfinished
white