RE: How to install SSD for Inspiron 14 3452?
SSD means solid state drive - flash memory. That's what was advertised and that's what Dell sold.
With any purchase, it's generally better to research before buying to avoid buyer's remorse. With computers, that is particularly true - many manufacturers provide no money-back satisfaction guarantee.
Price is no guarantee either - Apple charges among the highest prices in the industry, and provides only 14 days to return a product that doesn't meet the buyer's satisfaction.