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Growth stocks are those companies that are considered to have the potential to outperform the overall market over time because of their future potential. 
Value stocks are classified as companies that are currently trading below what they are really worth and will thus provide a superior return.
The concept of a growth stock versus one that is considered to be undervalued generally comes from the fundamental stock analysis. Growth stocks are considered by analysts to have the potential to outperform either the overall markets or else a specific subsegment of them for a period of time.
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What is Discounted Cash Flow (DCF)?
Discounted cash flow (DCF) is a valuation method used to estimate the value of an investment based on its expected future cash flows. DCF analysis attempts to figure out the value of an investment today, based on projections of how much money it will generate in the future.
This applies to the decisions of investors in companies or securities, such as acquiring a company, investing in a technology startup, or buying a stock, and for business owners and managers looking to make capital budgeting or operating expenditures decisions such as opening a new factory or purchasing or leasing new equipment.
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