insufficiency 和 deficiency 解释为金钱不足时用哪个？为什么？

我觉得没有很大差别
你可以加上形容词financial或者economic在前面,名词随便用哪个.应该是没有这么微妙的差别的

找到一个insufficiency用于金钱方面的例句,但是也不能就完全说明只能用insufficiency

Confronted with the key problem of the retailer capital insufficiency, the credit of retailing should be strengthened, and the commercial credit financing system development should be emphasized.
针对零售商资金不足这一关键性问题，提出应加大对零售商业的信贷力度，重视发展商业信用融资制度。

看了更多的例句,可能deficiency不太好
因为它侧重于"损失、缺陷"之意
把我查到的例句给你分享吧

1. Find insufficiency in company's current business process and provide improvement advice.
找到公司目前业务流程的缺陷,并提供改进建议.

2. The baby had thin, tightly adherent skin that causes arthrogryposis and respiratory insufficiency.
患婴有著薄，紧贴的皮肤，造成关节脔缩及呼吸不全。

3. This paper introduces professor Zhou Duan's clinical experience in treating chronic cardiac insufficiency.
摘要介绍周端教授治疗慢性心功能不全的临证经验。

4. An assessment using a hand held Doppler can be useful to detect whether