Riser and Sprue

Riser noun - A person who rises (especially from bed).

Sprue and riser are semantically related. In some cases you can use "Sprue" instead a noun "Riser".

Sprue noun - A chronic disorder that occurs in tropical and non-tropical forms and in both children and adults; nutrients are not absorbed; symptoms include foul-smelling diarrhea and emaciation.

Riser and sprue are semantically related. You can use "Riser" instead a noun "Sprue".