In a clause, you have a subject, a verb and possibly an object. The order is very rigid in English, being subject-verb-object. So in the sentence "Mary had a lamb", Mary is a subject and therefore a noun (a proper noun as well, because it is capitalised), a verb characterised by an inflection expressing past tense ("had" as opposed to "have") and a lamb is the object and therefore also a noun.
When learning a word, you should learn along with it what part of speech it is. If you have difficulty in doing so, try to think of its meaning or if you can't remember/don't know it, think of what it is not.
PS: "My experience includes Change Control, business process, requirement...
"I have developed (a) new process(es) and..." (A noun that does not have a definite article "the" must either have an "a/an" or be plural, without an "a/an")
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