Mustard gas and Tear gas

Mustard gas noun - A toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote.

Tear gas and mustard gas are semantically related. in poisonous gas topic. In some cases you can use "Tear gas" instead a noun phrase "Mustard gas".

Tear gas noun - A gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds.

Mustard gas and tear gas are semantically related. You can use "Mustard gas" instead a noun phrase "Tear gas".