Pine Nuts
All pines contain edible seeds in the late season cones. The only issue is the quality and size of those seeds are highly dependent upon the species of pine.
As someone who lives in the Northeast, species of pine available here do not offer up seeds big enough to warrant the effort required in gathering and processing them. However, if you live in the Great Basin areas where Pinyon pine grows, you have an excellent source of food in the fall time.

Male Pine Cone Flour
In the spring time, the pollen from the small male pine cones (as pictured below) can easily be shaken from the cone into a container and used as a stew thickener, or flour substitute that is a great source of PROTEIN.[/color]

Protein
Here are a few examples of who would like to have some stew thicken, flourly white substitute of Protein Goodness

This little girl loves her's it all sticky with alittle gritty tracktion.
This little girl most like to shack her's up and put it right in her mouth.