What is the difference between praising and preaching?

The original context of the question is Acts 2:11 (ESV): > 11 both Jews and proselytes, Cretans and Arabians—**we hear them telling in our own tongues the mighty works of God**.” Some claim that the apostles were "preaching in tongues" here. To me and others, this looks more like a case of praising (see my reasons [here](https://hermeneutics.stackexchange.com/q/56226/38524)) . However, I've heard some affirm that "preaching is praising, always", as if the two concepts were synonymous, and, therefore, that we should draw the conclusion that the gift of tongues is intended for "preaching the gospel" to foreigners. But going beyond the motivating context of tongues, I would like to ask a more general version of the question. What is the difference between praising God and preaching the gospel? Are they synonymous concepts? Are there either subtle or major differences?