While both are the creations of legendary Patou in-house perfumer Jean Kerleo and share similar names, they are quite different. *Patou Pour Homme*, is a high-powered, very 1980s fragrance. Its a complex, deep woodsy, herbal fragrance with spices which are blended masterfully. It has a subordinate green, fougère element to it, provided, by among other things, the lavender note. It dries down to a rich woodsy spicy accord with a hint of leather. No one element predominates. It's accord is an instance of fragrance art at its highest, and such a blending of elements and the use of clearly quality ingredients are what one usually expects from niche fragrance houses.
*Patou Pour Prive* starts with the most beautiful and joyous lavender note imaginable, and is lighter, both literally and in terms of the lack of dark woodsy spicy notes. Prive is greener, more herbal, and definitely more transparent; the lavender is not secondary here; it's predominant at least until well into the drydown. *Patou Pour Homme* is basically a Oriental Fougère whereas *Prive* is more of an Aromatic Fougère . Very different scents actually despite their almost similar name, but they do share that fougére element. To reiterate the former is really a predominantly woodsy oriental fougère while the latter is clearly more aromatically green and herbal throughout the drydown with no spice. It has a "new mown hay" note, a dry green note that balances the aromatic lavender nicely and dries down to a smooth, prominent sandalwood base with just a touch of vanilla. Both are exceptional fragrances, and I don't just mean that as an empty superlative. They definitely don't make them like these two anymore.