Determined is defined as <span> having a strong feeling that you are going to do something and that you will not allow anyone get in your way.
Stubborn is defined as </span><span>having or showing dogged determination not to change one's attitude or position on something, especially in spite of good arguments or reasons to do so.
Connotation of determined and stubborn is being strong-willed and resolute. When you are determined, you have decided to do something. When you are stubborn, in doing what you have to do and presented with arguments, you still decided to continue what you are doing regardless of what others say.
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anu poh
Explanation:
Hindi ko alam need ko din yan
Sergei considers the goldfish to be his friend. From the statement, it
is shown that Sergei has trust issues with other beings (May it be a human or
animal). He may have a dreadful experience in the past that prevents him from
befriending others. And he made an exception with the goldfish because he found
out that the goldfish will not leave him even if he is troubled.