Yes depending on what they use when "aging" does a lot for the character of the finished liquor. One can use freshly charred white oak barrels. One can follow up with or first use, wine barrels, to give a different flavor, sometimes even moving the liquor from one type of wine barrel to another for an even different taste or simply moving the liquor to a "younger" used wine barrel after several years, repeating this, to infuse more of the character of the wine into the spirit. Part of the art is then knowing how much water, and from what water source, to cut the spirit down as adding the water sometimes reveals different flavors.
Some of the lesser cost liquors put the liquor down in stainless steel or glass lined tanks, with charred oak chips and activated charcoal...and add also other wood with "toasted" or charred bits to change the flavor. A lot of the commercial distilleries that produce a low cost product that isn't aged for very long (or perhaps doesn't even mention it's age on the bottle) is basically from stainless steel containers, and activated charcoal, with just enough charred oak to give you some hint of the taste of the "barrel".
LD