Both could be done with libraries. Things that you (can) put away behind abstractions, layers or wrappers. I'm the author and tried to convey clearly the diff

Both could be done with libraries. Things that you (can) put away behind abstractions, layers or wrappers. I'm the author and tried to convey clearly the difference between libraries and frameworks. Both allow code-reuse, both allow "standing on shoulders". But one allows you to do so with freedom of movement, independence and domain constraints (libraries) whereas the other locks you in, enforces architectures and designs and requires workarounds when your domain-requirements differ from what the framework dictates.