What examples highlight the difference between 感情 (gǎnqíng) and 情感 (qínggǎn), meaning "emotion" [noun]?
I think 感情 usually means the emotion between you and someone or something. For example:
我和他是十多年的老朋友了，我们的感情很深。
你和她有感情吗？
我对祖国有着深厚的感情。

While 情感 is a broader concept.
悲伤、仇恨、惋惜多种情感交织在一起，让她的心情久久不能平静。