What is the difference between 決意 and 決心？


I have pondered this for a while but it seems that 決意 and 決心 can be used
interchangeably as “determination” or “make up your mind” . I have checked on
some [Japanese articles](https://okurukotoba.tokyo/archives/2424) as well, and
there is some nuance to it, but does anybody have seen this on a real
conversation, article or book?

