The two strikers have contributed 11 goals between them this season, each scoring two on the last outing away at Fulham.
“Really, for me no,” Lacazette said to ‘Sky Sports’, when asked if the two were competing with each other.
“If Auba scores 40 goals and we go to the Champions League and as well we win something, I will be happybecause this season we just want to win something.
“There is no competition like who scores more goals on the weekend. Maybe in training because it is better to improve, but not on the weekend.
“It is natural, we just have fun, we laugh, but we work as well,” he added, talking about the partnership that has developed between the two.
“OK, people can see that we smile together, we are a good partnership. But when we have to work, we work. We know when we can work and when we can laugh and we just enjoy laugh and football together.
“It is more natural. We work together and I know him since France, he knows me as well, so I know how he plays and it is more natural.”