The Clicks (All) metric includes all clicks on your Facebook ad (link clicks, clicks on media, post reactions, comments, shares, and more).
Per Facebook, Clicks (All) includes:
- Link clicks
- Clicks to the associated business Page profile or profile picture
- Post reactions (such as likes or loves)
- Comments or shares
- Clicks to expand media (such as photos) to full screen
- Clicks to take actions identified as your campaign objective (such as liking your Page for a Page engagement campaign)
Some related reading: