Why don’t dictionaries have all the different forms of a word

Here are some different forms of a word that come to mind:

• Noun (singular, plural, possessive)
• Verb (past, present, future, etc.)
• Adverb
• Adjective

I know that these are called parts of speech and there are other terms involving the grammar of changing them like conjugation for verbs. But it’s the subcategories for these that I’m interested in, especially nouns. For example, there are 3 subcategories for nouns:

• Nouns that describes how a person behaves/what they do (someone who is gluttonous is a glutton) or what they believe in (someone who believes in existentialism is an existentialist)

• Nouns that describe the process of something getting done (the process of creating something is creation)

• Nouns that describe a phenomenon like a way of thinking or a trait (using the previous examples, an existentialist believes in existentialism and a glutton gives into gluttony

Also there is a subcategory of verb that I’m thinking of:

• To make something or someone have more of a particular quality (making something more simple is simplifying it, making someone more beautiful is beautifying them)

I know all of this has to do with etymology, particularly prefixes and suffixes. But I would like to know if there is a dictionary or other reference (preferably online, but I’m open to books) that has all the different forms of a word in one place. I know some online dictionaries might have them, but that doesn’t always happen. For example, if I google initial, initialization or initialize don’t show up in many dictionaries (I only saw one from a quick google search). This is also a simple word. It can be more difficult when trying to find more technical or less common words. Any and all information on this topic is welcome, not necessarily just references like a dictionary