profusion：大量，丰富，充沛

词根词缀：pro-前 + -fus-熔,注 + -ion名词词尾

• gravimetry
• gravitate
• gravitation
• gravity
• gravy
• gray
• graze
• grease
• greasy spoon
• great
• grebe
• Grecian
• greed
• greedily
• greedy
• Greek
• Greek calends
• Greek gift
• licence
• license
• licensed
• license number
• license plate
• licensing laws
• licentiate