Cenotaph and Obelisk

Cenotaph noun - A monument built to honor people whose remains are interred elsewhere or whose remains cannot be recovered.

Obelisk and cenotaph are semantically related. in memorial topic. In some cases you can use "Obelisk" instead a noun "Cenotaph", when it comes to topics like monument.

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

Cenotaph and obelisk are semantically related. You can use "Cenotaph" instead a noun "Obelisk".