Investment involves committing funds with the aim of achieving additional income or growth in value over time. It is characterized by risk, return, safety, liquidity, and tax benefits. The key aspects are committing funds for a future reward, an expectation of returns higher than realized returns due to uncertainty, and balancing risk and return based on one's objectives and capacity. Investment aims to maximize returns while minimizing risk through prudent analysis, whereas speculation takes greater risks seeking short-term capital gains.