achievement
arena
athlete
athletic
business
businessman
businessperson
challenge
competition
competitive
crawl
determination
difficulty
direction
effort
fatigue
finish
finishline
goal
hard
lazy
man
milksops
mollusk
nut
player
power
problem
race
relaxed
run
runner
shell
slow
snail
speed
sport
stadium
start
strength
strong
success
track
trouble
victory
walk
weight
winner
worker