Obelisk and Thill

Obelisk noun - A stone pillar having a rectangular cross section tapering towards a pyramidal top.

Thill and obelisk are semantically related In some cases you can use "Thill" instead a noun "Obelisk".

Thill noun - One of two shafts extending from the body of a cart or carriage on either side of the animal that pulls it.

Obelisk and thill are semantically related in long part of something topic. You can use "Obelisk" instead a noun "Thill".