How do you speak substances?
What does substance mean?
1 : physical material from which something is made or which has discrete existence the substance of nerve tissue. 2 : matter of particular or definite chemical constitution.
Is the H silent in herbicide?
“In British English, herb and its derivatives, such as herbaceous, herbal, herbicide, and herbivore, are pronounced with h. In American English, herb and herbal are more often pronounced without the h, while the opposite is true of herbaceous, herbicide, and herbivore, which are more often pronounced with the h.”