Synonyms for Terrace (same or very similar meaning)
WordNet sense 1 (a level shelf of land interrupting a declivity (with steep slopes above and below)):
bench
WordNet sense 2 (usually paved outdoor area adjoining a residence):
patio
WordNet sense 3 (provide (a house) with a terrace):
terrasse
From the ODE community, based on WordNet
add/edit