e26 light bulb vs a19 – a19 vs e26 bulb

The light bulb that most Americans have used in their homes is an A19 bulb with an E26 base. That said, not all e26 light bulb vs a19. While A19 bulbs must utilize E26 bulb bases, it's not true that all E26 bases must use A19 heads. In fact, they are two kinds of terminologies.