AxesEdge is an option for three-dimensional graphics functions that specifies on which edges of the bounding box axes should be drawn.
AxesStyle is an option for graphics functions that specifies how axes should be rendered.
CDFDeploy["file.cdf", expr] deploys expr in a form that can be played by Wolfram CDF Player.CDFDeploy["file.cdf", notebook] deploys a notebook.CDFDeploy["file.cdf", ...
ChartElements is an option to charting functions such as BarChart that specifies the graphics to use as the basis for bars or other chart elements.
ChartStyle is an option for charting functions that specifies styles in which chart elements should be drawn.
Conditioned[expr, cond] or expr \[Conditioned] cond represents expr conditioned by the predicate cond.
ControlType is an option for Manipulate and related functions that specifies what type of controls should be displayed.
CovarianceEstimatorFunction is an option for generalized linear model fitting functions that specifies the estimator for the parameter covariance matrix.
CriticalSection[{var_1, var_2, ...}, expr] locks the variables var_i with respect to parallel computation, evaluates expr, then releases the var_i.
Cubics
(Built-in Mathematica Symbol) Cubics is an option for functions that involve solving algebraic equations, that specifies whether explicit forms for solutions to cubic equations should be given.