“food (n.)�
Old English foda "food, nourishment; fuel," also figurative, from Proto-Germanic *fodon (cf. Gothic fodeins), from Germanic root *fod-, equivalent of PIE *pa- "to tend, keep, pasture, to protect, to guard, to feed" (cf. Greek pateisthai "to feed;" Latin pabulum "food, fodder," panis "bread," pasci "to feed," pascare "to graze, pasture, feed," pastor "shepherd," literally "feeder;" Avestan pitu- "food;" Old Church Slavonic pasti "feed cattle, pasture;" Russian pishcha "food"). Food chain is from 1917. Food poisoning attested by 1864; food processor in the kitchen appliance sense from 1973.
F1 K1
F1
F1
F2,F3,F4,F5
K1 F1
K2
K2 F2,F3,F4,F5
F2,F3,F4,F5
K1
F1 K2
K2 K2 F2,F3,F4,F5
K1
F2,F3,F4,F5
K1
P
P
P
P
P
P
P
P
P
P
abstraction
F2,F3,F4,F5
F4
simplify he geometry by keeping main components
K2
F3 F2
F1
F1
K1
P
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rotation intersection pressure flux
K1
F1
K2
F2,F3,F4,F5
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
K1
F1
K2
F2,F3,F4,F5
F1
F2 F3 F4
F1 K2
F1
F1 F2
K1
F3 F4
F2 K2
K1
F3
F1
F4 F2 F3
K2 F4 K1 K1
F2 F3 F4 K2