Both are different. Sales Volume: Is the amount of sales (i.e. In USD), it is the value of the all products have been sold in a certain period of time (day, month, year,..) Market Share: Is the percentage that a certain product has among the other competitors for the same product category. Hope my answer is clear
Sales volume means quantity of products and Market Share means the percentage of the total amount of sales of a particular product that a company has.
Love is concrete way of liking. It might also invole emotions and feelings.