Hollyhock and White mallow

Hollyhock noun - Any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea.

White mallow and hollyhock are semantically related. In some cases you can replace phrase "White mallow" with "Hollyhock", this terms are similar.

White mallow noun - European perennial plant naturalized in United States having triangular ovate leaves and lilac-pink flowers.

Hollyhock and white mallow are semantically related. You can use "Hollyhock" instead a noun phrase "White mallow".