1. Grazed (touch or scrape lightly in passing)- to graze is to break the surface of your skin by rubbing it agaisnt something. Bob grazed his knee when he fell over.
2. Troughed (worn into grooves) Trough is a narrow depression. A sunken or depressed geological formation.
3. Assimilate (absorve and integrate) - It takes time to assimilate all these facts.
4. Confide (tell someone about a private matter) He confided to his friends something about his marriage.