principal

Remember in elementary school, they taught you the difference between principal and principle. It was pure propaganda: the principal of the school is your PAL! Principles are probably more important and ought to be held dearly, didn't get a fun trick.
the word Principal comes back to haunt me!
Principal can also be used as an adjective.
Principal Component Analysis.
I don't really understand what this means in application. But, didn't you hear? Statistics is all about theory at UVA anyways!

> print(summary(R.prc,loadings=T,scores=T))
Importance of components:
Comp.1 Comp.2 Comp.3 Comp.4 Comp.5
Standard deviation 2.182863 0.38849296 0.215406149 0.105260061 0.0412688656
Proportion of Variance 0.957767 0.03033704 0.009326595 0.002227071 0.0003423355
Cumulative Proportion 0.957767 0.98810400 0.997430593 0.999657664 1.0000000000

Loadings:
Comp.1 Comp.2 Comp.3 Comp.4 Comp.5
FL -0.452 -0.138 0.531 0.697
RW -0.428 0.898
CL -0.453 -0.268 -0.310 -0.792
CW -0.451 -0.181 -0.653 0.575
BD -0.451 -0.264 0.443 -0.707 0.176

Principal components, you are not my friend.