To deck with that which is becoming, ornamental, or honorary; to adorn; to beautify; to embellish; as, to decorate the person; to decorate an edifice; to decorate a lawn with flowers; to decorate the mind with moral beauties; to decorate a hero with honors.
To plan and execute the design, furnishings, and ornamentation of the interior of (a house, church, apartment, etc.), esp. by selecting colors, fabrics, and style of furniture, by making minor structural changes.