swimming pool
compound.A special container or area built and filled with water for people to swim in.
compound.A man-made structure, typically a tank or basin, designed and constructed to hold water for recreational or competitive swimming.
“The hotel has a big swimming pool.”
“On hot summer days, the public swimming pool is always crowded with families.”
“The new sports complex features an Olympic-sized swimming pool designed for international competitions and public use.”
This is a compound noun where 'swimming' describes the purpose of the 'pool'.
Highlight the primary stress on 'SWIMMING pool', a key feature of English compound nouns that distinguishes them from adjective + noun phrases.
To describe the pool's purpose, use the gerund 'swimming' before the noun 'pool'.