I'm going off on a limb here, so don't be mad at me.
I'm sure you'd try and think of a difference... Well from what I can see, lightning jutsu all use noise and sound (1000 Chirping Birds anyone?), all while being used for head on attacking. But MAYBE thunder release could be silent jutsu (FTG doesn't make noise... As far as I know) and is used for transition and movement, combined with an attack from the user.
Then there's the fact that none of Minatos attacks are named after any type of lightning. All of them are thunder based. If I recall correctly.
But yeah... Do you think it's possible?