These ROOT-WORDS are PED & POD. Both mean FOOT. PED comes from the Latin ped. POD comes from the Greek podos. Here’s a complication. On the list, words No. 1, 2, 3, 4, 5, 6, 7, 8 are concerned with children. You are right to ask where children come in with PED, which means FOOT. Here’s the answer; in Greek paidos means boy. Someone walked (agogos) the boy to school, on foot. Paidos became PED; his companion became a teacher (PEDagogue). The doctor who cared for the boy became a PEDiatrician. See?
1. Pedagogue : PED agogue (ped’ a gog) n.
One who leads a child; a teacher
2. Pedantry : PED antry (ped’ an tree) n.
Display of learning
3. Pediatrician : PED iatrician (ped ee a trish’ an) n.
A doctor who specializes in the care of children
4. Pediatrics : PED iatrics (pede ee a’ triks) n.
That branch of medicine devoted to the care of children
5. Pedodontia : PED odontia (pee do don’ shi a) n.
Treatment of the teeth of children
6. Pedophilia : PED ophilia (pee do fil’ i a) n.
Inordinate love for children
7. Pedotrophy : PED otrophy (pe dot’ ro fi) n.
The art of properly rearing children
8. Pedology : PED ology (pee dol’ o jee) n.
9. Pedigerous : PED igerous (pe dij’ er us) adj.
10. Pedestal : PED estal (ped’ est al) n.
The base of a statue or monument
11. Pedestrian : PED estrian (pe des’ tree an) n.
One who travels on foot
12. Pedometer : PED ometer (pe dom’ et er) n.
An instrument to measure distance walked
13. Pedomotive : PED omotive (ped o moe’ tiv) adj.
Moved by the power of the foot
14. Pedal : PED al (ped’ al) adj.
Relating to the foot
15. Podiatry : POD iatry (po die’ a tree) n.
That branch of medicine which treats of diseases of the foot
16. Podiatrist : POD iatrist (po die’ a trist) n.
One who practices podiatry
17. Pedograph : PED ograph (ped’ o graf) n.
An instrument that records topography when held by a pedestrian as he walks
18. Pedomotor : PED omotor (pe dom’ ot or) n.
Machine driven by the power of the feet; as, a bicycle, skates