Anyone know if late pointing means late speech?

DS didn't start index finger pointing until 15 months, he's 16 months now. Prior to that, he gestured with his whole hand toward things.

He says about 10ish words - even though he understands hundreds of words, he doesnt say a whole lot.

Just curious if anyone else had late pointers and if it always means late speech.

Also, he's been pointing at everythinggg the last few weeks and wants me to name everything in the house. So I'm wondering if these means he might have a vocab explosion soon - I hope so!