Clocks and Regulators

Clocks noun - European weed naturalized in southwestern United States and Mexico having reddish decumbent stems with small fernlike leaves and small deep reddish-lavender flowers followed by slender fruits that stick straight up; often grown for forage.

Regulators and clocks are semantically related. In some cases you can use "Regulators" instead a noun "Clocks".

Clocks and regulators are semantically related. Sometimes you can replace term "Clocks" with "Regulators", this words are similar.