You would use "proceeding" to describe an action or process that is currently happening or will happen in the future. For example, "The investigation is proceeding carefully" or "The next step in the process is proceeding as scheduled."
You would use "preceding" to describe something that came before or in front of something else, either in time or order. For example, "The preceding speaker covered the key points" or "The preceding chapter provided important background information."
Context matters in English because the meaning of words can vary based on the surrounding words, phrases, or situation. Words often have multiple meanings, and the intended sense becomes clear through the context in which they are used.
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