Oh dear, where to begin.
Speaking good English would help.
Begin sentences with a capital letter.
The personal pronoun should always be a majuscule.
Learn the correct usage of definite and indefinite articles.
Use the correct punctuation.
Spelling is very important.
Once this has been achieved you will be in a position to learn Verbs, Adjectives, Adverbs, Nouns etc.
There is no easy answer, as the English language contains many words where that word may be used as a Noun, Transitive Verb, Intransitive Verb, Pronoun, Preposition and Adjective.
Simple Example[
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It would be difficult to recognise it without context.