This Hold or Hodl is just the same meaning in my opinion but many crypto enthusiast always differentiates them to have defferent meanings.
Now, according to investopedia or the dictionary, it is defines as, "HODL is a term derived from a misspelling of "hold" that refers to buy-and-hold strategies in the context of bitcoin and other cryptocurrencies.
While investing or investment according to the dictionary is defines as, "An investment is an asset or item accrued with the goal of generating income or recognition. In an economic outlook, an investment is the purchase of goods that are not consumed today but are used in the future to generate wealth. In finance, an investment is a financial asset bought with the idea that the asset will provide income further or will later be sold at a higher cost price for a profit."
What are your thoughts. Thanks