Incubus and Onus

Incubus noun - A male demon believed to visit people while they sleep and to consort with sleeping women.

Onus and incubus are semantically related in thing topic. In some cases you can use "Onus" instead a noun "Incubus".

Onus noun - A mark of guilt or disgrace.

Incubus and onus are semantically related in thing topic. You can use "Incubus" instead a noun "Onus", if it concerns topics such as burden.