Donation, defined; characteristics

What is the meaning of donation in civil law? Donation is an act or liberality whereby a person disposes gratuitously of a thing or right in favor of another who accept it. (Art. 725)

What are its characteristics? Characteristics of donation are:

[1] Consent, subject matter, cause
[2] Necessary form.
[3] Consent or acceptance of the donee
[4] Irrevocability, except for legal causes
[5] Intent to benefit the donee (animus donandi)
[6] Resultant decrease in the assets or patrimony of the donor.