QQQ is among the most stable and actively-traded ETFs in the world. Commonly referred to as Triple Q, it has the structure of a unit investment trust.
QQQ: Invesco QQQ Trust Series 1
VOOG: Vanguard S&P 500 Growth Index Fund ETF
The goal of VOOG is to measure the performance of its benchmark index that tracks the performance of the large-capitalization growth stocks in the US.