tube (approximately cylindrical container with a crimped end)

tuning (the adjustment of a system or circuit to secure optimum performance) / tuning (the calibration of a musical instrument to a standard pitch)

tune a system or circuit / tune a musical instrument

Ho Chi Minh (Vietnamese communist revolutionary leader) / Ho Chi Minh, Ho Chi Minh City (largest city of Vietnam)

bathyscaphe (self-propelled deep-sea submersible)

centime (French former currency, ¹⁄₁₀₀ of a franc)

a steward (flight attendant)

a speech, an address, a talk

polystyrol

a beach towel