What is difference between add and assembly in catia v5?

Question

catiav5 mechanical software

Answer 1

add is the boolean operation which is used to add the material no matter whether it is positive feature or negative feature but assembly is the one which considers if it is positive feature it adds material and if it is negative feature it removes material

Note:positive feature are the options used to add material like pad, shaft, rib, multi section solid.....etc

negative feature are the options used to removes material like pocket, groove, slot, remove multisection solid.....etc

hope this helps