Henna and Peroxide

Henna noun - A reddish brown dye used especially on hair.

Peroxide and henna are semantically related. In some cases you can use "Peroxide" instead a noun "Henna".

Peroxide noun - A viscous liquid with strong oxidizing properties; a powerful bleaching agent; also used (in aqueous solutions) as a mild disinfectant and (in strong concentrations) as an oxidant in rocket fuels.

Henna and peroxide are semantically related. Sometimes you can use "Henna" instead a noun "Peroxide".