hazard

nouns

a source of danger; a possibility of incurring loss or misfortune
"drinking alcohol is a health hazard"
is derived from
an unknown and unpredictable phenomenon that causes an event to result one way rather than another
"bad luck caused his downfall"; "we ran into each other by pure chance"
an obstacle on a golf course
is a part of
course consisting of a large landscaped area for playing golf
is a type of (narrower)
an obstruction that stands in the way (and must be removed or surmounted or circumvented)

verbs

put forward, of a guess, in spite of possible refutation
"I am guessing that the price of real estate will rise again"; "I cannot pretend to say that you are wrong"
put at risk
"I will stake my good reputation for this"
take a risk in the hope of a favorable outcome
"When you buy these stocks you are gambling"