The best replacement for margin is markup.

The best alternatives to margin are rated as following:
★★★★★  markup
★★★★  padding
★★★  profit
★★  gross profit
★★  cash account
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★  markup chart
★  butter
★  gross margin
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★  percentage
★  contribution margin
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★  padding css
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Your alternative for margin is not listed? Suggest!
Speaking about margin, one probably shouldn't forget about float.

Other search terms related to margin and their ratings are:
★★★★★ float
★★★★★ div
★★★★ position absolute
★★★ float css
★★★ scottrade
★★★ width 100
★★ span
★★ options trading
★ roi
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You have in mind a companion for margin and it is not yet here? Propose!



Google Trends

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margin
markup
padding