Definitions of chance:

• noun:   a risk involving danger

  Example: "You take a chance when you let her drive"

• noun:   a measure of how likely it is that some event will occur

  Example: "We have a good chance of winning"

• noun:   a possibility due to a favorable combination of circumstances

  Example: "Now is your chance"

• noun:   an unknown and unpredictable phenomenon that causes an event to result one way rather than another

  Example: "We ran into each other by pure chance"

• verb:   be the case by chance

  Example: "I chanced to meet my old friend in the street"

• verb:   take a risk in the hope of a favorable outcome
• verb:   come upon, as if by accident; meet with

  Example: "She chanced upon an interesting book in the bookstore the other day"

• name:  A male given name (rare: 1 in 14285 males; popularity rank in the U.S.: #842)
• name:  A surname (common: 1 in 20000 families; popularity rank in the U.S.: #2290)