$\text{Relation between Lie algebra/ group and formal group laws:}$
I have found a sentence within a short article but could not grasp its meaning fully. The sentence (exactly copied) is the following one-
$\textit{Lie algebras are to smooth groups over $\Bbb R$ or $\Bbb C$ as formal group laws}$ $\textit{ are to smooth algebraic groups over any ring $\Bbb R$.}$
Can you please explain the essence of this sentence ?