What's the difference between aboveboard and abovedeck?

Aboveboard

Definition:

• (adv.) Above the board or table. Hence: in open sight; without trick, concealment, or deception.

Example Sentences:

• (1) Clinton said his wife, Hillary Clinton, had assured him that their dealings were aboveboard.

Abovedeck

Definition:

• (a.) On deck; and hence, like aboveboard, without artifice.

Example Sentences: