Expressing "feelings" with 感情 and 情感
Both nouns have the same meaning “feelings”, but they have some differences.
The noun 感情
The noun 感情 
is often used to indicate feelings between people.
is often used to indicate feelings between people. Pay attention
The noun 感情 is used in spoken and written language.
Examples
她很能体谅他人的感情
She pays a lot of attention to other people’s feelings
tā hěn néng tǐliàng tārén de gǎnqíng
你是说你对我产生感情了吗？
Do you mean that you have feelings for me?
nǐ shì shuō nǐ duì wǒ chǎnshēng gǎnqíng le ma
新闻业需要公正而不带感情
A journalist should be impartial and shouldn’t show emotions
xīnwén yè xūyào gōngzhèng ér bú dài gǎnqíng
The noun 情感
The noun 情感 is often used to indicate a person’s feelings and emotions that are not related to anybody else.
is often used to indicate a person’s feelings and emotions that are not related to anybody else. Pay attention
The noun 情感 is usually used in written language.
Examples
欣赏音乐是宣泄情感的好方法
Listening to music is a great way to express emotions
xīnshǎng yīnyuè shì xuānxiè qínggǎn de hǎo fāngfǎ
医生不得不把个人的情感置之度外
Doctors should put personal feelings aside
yīshēng bùdébù bǎ gèrén de qínggǎn zhìzhīdùwài
她以无数种方式给予他情感支持和实际支持
She supports him both emotionally and practically in countless ways
tā yǐ wúshù zhǒng fāngshì jǐyǔ tā qínggǎn zhīchí hé shíjì zhīchí
The noun 情感 is also used to form terms used in professional psychology.
For example:
情感障碍
情感曲线
情感曲线 Both collocations can be used with the following words:
充满
表达
控制
缺乏
复杂
丰富
表达
控制
缺乏
复杂
丰富 Examples
我连话都不敢跟他说，更别说是表达感情了
I don’t even dare talk to him, not to mention the fact that I can’t express my feelings for him
wǒ lián huà dōu bù gǎn gēn tā shuō, gèng bié shuō shì biǎodá gǎnqíng le
写作是表达情感的一种好方法
A letter is a great way to express feelings
xiězuò shì biǎodá qínggǎn de yì zhǒng hǎo fāngfǎ