Older Terms~ Morning Room vs Mourning Room sounds similar but are two very different things.
Morning Room= parlor, modern name livingroom or den. A sitting room in a private house. It usually in the east part of the house catching the sun rays first thing in the morning. Sunlight was vital before the days of electricity.
Mourning Room= room where a wake is held for the decease before burial. Sometimes a Morning room was used as a Mourning Room by the family of the deceased.