Clocks and Sundials

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.

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

Clocks and sundials are semantically related. You can use "Clocks" instead a noun "Sundials".