"Conniving" vs. "scheming": a subtle dance of deception

What is similar?

Both "conniving" and "scheming" describe behavior that is cunning and often deceitful, involving secretive and underhanded planning to achieve a particular end, typically to gain advantage over others.

What is different?

The word "conniving" implies a willingness to conspire or assist in underhanded plots, often with a sense of moral compromise or betrayal. It can carry a sense of passive complicity. "Scheming" describes proactive planning and plotting, usually with the intent of achieving one's goals, which may be selfish or unscrupulous. While both indicate deceitful intentions, "conniving" focuses more on the acquiescent or compliant involvement, whereas "scheming" emphasizes the active role in planning.

Which one is more common?