Procaine differs from lidocaine in that

Procaine is a p-aminobenzoic acid ester and lidocaine is not

Lidocaine is a meta-aminobenzoic acid ester and procaine is not

The duration of action of procaine is longer than that of an equal
total dose of lidocaine

Procaine hydrochloride is metabolized into diethylaminoethanol
and benzoic acid.