(1) "and" are the same or equivalent, and one of the two propositions is false.

(2) OR is OR, one of the two propositions is true, and the new proposition is true.

2. Different meanings:

(1) "and" means intersection.

(2) or means combination.

3. For example:

(1) "harmony" is both, such as "tall and handsome" means "tall and handsome" and "harmony" means "harmony";

(2) "Or" is a choice, so one of the two conditions, such as "tall or handsome", is enough.

Extended data:

1. Linking P and Q with the conjunction "and" is called a new proposition, which is recorded as p∧q and pronounced as "P and Q".

2. linking p and q with the conjunction "or" is called a new proposition, which is recorded as p∨q and pronounced as "p or q".

3. If you deny a proposition P, you will get a new proposition, which is recorded as ┐p and pronounced as "non-P".

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