I'm not a native English speaker, I've seen that there are many words in English that have different synonyms. Some of them are,
(sneak out, creep out), (stare, gaze), (exhaustion, fatigue), (essential, crucial, very important)
And so on. I think these words can be used interchangeably in many situations, but there are some details for each word that make one word more appropriate to describe the specific situation. I'm wondering, if native English speakers use the correct synonym in different situations that is consistent with the details. For example, as a non-native speaker, if I don't know the details of each meaning and use an inappropriate synonym, will a native speaker notice and so it's important to understanding the details and choose the right word?