You can have an opposite of a property, such as "big", "fast", "silly", but in most cases it doesn't make much sense to talk about opposites of objects.
It doesn't have an antonym since its a noun. Like how there is no opposite to say a strawberry.
Make in a crafting table; plank,plank,plank book, book, book plank, plank,plank
A seesaw consists of a plank supported from the center by a pivot point, allowing two people to sit on opposite ends. The plank can pivot up and down as weight shifts between the two ends.
plank
A wale plank
There is no magic planks in runescape. Only plank, oak plank, teak plank and mahogany plank.
Plank 1. Good Sense of vision Plank 2. Makes good decisions Plank 3. Willing to act Plank 4. Can handle conflict Plank 5. Can avoid pitfalls Plank 6. Can motivate others
A wale plank
A plank of a boat.
Scott Plank, He helped Kevin Plank start his buisness
Doug Plank's birth name is Douglas Michael Plank.
Jane Plank's birth name is Jane Kathryn Plank.