buoyancy

noun
1
a situation in which prices, business activity, etc. tend to increase or stay at a high level, usually showing financial success
رونق, شکوفایی اقتصادی
2
the feeling of being cheerful and feeling sure that things will be successful
شادمانی, خوش‌بینی, سرزندگی, نشاط, شادابی
a mood of buoyancy
3
the fact of floating, being able to float or able to keep things floating
شناوری, خاصیت شناوری
a buoyancy aid