They have the same thing in common and share the same thing in common, both are pollinators and together, they love to pollinate the same kind of flower. These 2 agents of pollination knows where to position themselves when pollinating a certain flower.
The butterfly hanging upside down position and the honeybee on top. Other photo down shows the butterfly on the left and honeybee at the right and habitually switching places all the time.
I have captured these photos while roaming around ”Botanical garden of Baguio city” Together they caught my attention, this is a rare chance to take. Lucky enough to snap a picture.