It is a spirit made in china from Sweet Peas amongst other ingredients
Giving the context where these a,b and main are mentioned would make more sense and be responded with clear answers please.
To combine or blend something together.
mortor is a mix of cement & sand in a ratio suited for a specific purpose. For plastering walls a ratio of 1 part cement to 6-8 parts sand is used depending on the strength required. For brick...
Its the same thing !