Yes. Exactly, they do have both, fine grained and coarse grained rocks.
fine grained or coarse grained
Granite is a coarse grained igneous rock without Pyroxene.
A peridotite is a dense, coarse-grained igneous rock
Metamorphic rock can be coarse grained or fine grained.
Fine grained rock exhibits a non-visible or nearly non-visible crystalline structure on a fractured surface. On the opposite end, a coarse grained rock exhibits mineral crystals of the rock's constituents on a fractured surface. The larger the crystals, the coarser grained is the rock. Basalt would be an example of a fine grained rock. Granite would be an example of a coarse grained rock.
Coarse
When all grains in a rock are large and easy to see, the rock is described as coarse-grained.
Visible crystals or grains would be referred to as a coarse grained texture.
It is a coarse grained rock if its intrusive.
It is a coarse grained rock if its intrusive.
The size of crystals in an igneous rock is called texture. Texture can range from fine-grained (small crystals) to coarse-grained (large crystals).