salam Ilker
Words of Quran originate mostly from 3-lettered words. These are called the roots. Just by knowing one simple 3-lettered root, a vast combination of words can be understood.
Here are the important facts about the mechanism of Arabic words.
This 3-lettered or 4 lettered root acts as the skeleton of the word.
Different patterns are added to this "root (skeleton)" to form a variety of words.
Pattern can be suffix, prefix, vowel markings (jabar, jer, pesh, etc).
Pattern represents grammatical term.
Identifying the root in an Arabic word is a most important step. To do that
Take off all the vowel markings (jabar, jer), tashdeed, jajam, etc.
Take off "Al" which is placed in the front OR "alif" inserted in the middle.
Simply find the core 3 or 4 letters. These root consisting of 3 or 4 letters give us the meaning of an Arabic word.
So, if these steps are used and the root is found out , we see that both maalik and malik have the same root. Hence similar meaning, but depending on context a slight difference is assigned, owner and king is essentially carrying same meaning even in english, which is someone with authority!
Different pronounciation does not change the meaning in Arabic words. Different roots have different meaning. Arabic words are assigned their meaning based on their roots, grammatical significance of verb, noun, past tense present tense these are changed with spelling not the meaning.