a, o, b, d, e, l, n, r, t, i, u are letters that make 'bulletin board'
oar, bulletin, ti, LET, ar, Ull, in, bull, bullet, let, boa, boar, board, tin, Bull, AR, IN, LE, Ar, In, Ti are words within 'bulletin board'
2 possible definitions for 'bulletin board'
Under this definition, bulletin board is a noun and has the following properties:
bulletin board system, electronic bulletin board, bbs have the same meaning as 'bulletin board'
'bulletin board' can be a type of digital computer.
'bulletin board' can be a category of computer science, computing.
Under this definition, bulletin board is a noun and has the following properties:
notice board has the same meaning as bulletin board
'bulletin board' can be a type of board.
call-board is a type of bulletin board.