Value metrics are primarily based on a heuristic that incorporates TTM ratios such as P/S, P/E, P/B (price to equity), as well as measures of the company's long-term solvency such as its gearing ratio, stable cash flows, working capital, and dividend payout ratio. These are all discrete values that disregard relative increases in sales, free cash flow, or earnings; the only thing that matters is whether or not the P/S, P/E, P/B, and P/FCF are BELOW (and thus better than) competing brands in the sector. What those values are compared to the company's history or future is irrelevant when value investing. The point is to identify companies that are trading below their fair market value.
They are generally thought to be "safer" investments because there's proof of present profitability and fiscal strength.
Growth, however, usually is based on past growth performance as well as future expected growth in sales and earnings in addition to free cash flow to the firm. Past performance or current performance factor in, and are useful in calculating the increase in sales and earnings (and thus the "forward" P/S and P/E ratios), but the emphasis is placed on RELATIVE value from year to year, not on DISCRETE values of these ratios, etc.
In the event that "forward" P/S and P/E ratios are significantly lower than their TTM counterparts, then a strong case can be made, controlling for unusual conditions (high/low levels of non-recurring costs), constraints to growth (level of cash-equivalents on hand, degree of debt), and eccentricities in Non-GAAP accounting practices, for the company to be a "growth" candidate or a "growth play".
Normally growth companies can be viewed as four types:
- emerging technologies that are disruptive
- newer companies with strong guidance
- companies that are gaining market share from competitors
- the management is finding cost-cutting procedures to increase earnings.
Think of value in terms of discrete ratios and growth in terms of percentage increases from year to year, and you'll understand why the two things are often separated into distinct categories.