Mast and Upright

Mast noun - A vertical spar for supporting sails.

Upright and mast are semantically related in flagpole topic. In some cases you can use "Upright" instead a noun "Mast", when it comes to topics like column.

Nearby Words: masted, masthead, masting

Upright noun - A vertical structural member as a post or stake.

Mast and upright are semantically related in thing topic. You can use "Mast" instead a noun "Upright", if it concerns topics such as column.

Nearby Words: uprightness, uprightly