
Supplement
Fill the Gap
Use 'supplement' to describe adding what's lacking to improve the whole.

An omega-3 supplement can fill the nutritional gap in a vegan diet.
Not a Replacement
'Supplement' suggests addition, not substituting an essential element.

I take a calcium supplement, not as a replacement, but alongside my regular meals.
Improve Effectiveness
Emphasize how 'supplement' is used to complement and enhance effectiveness.

The training program was supplemented with practical examples to make it more effective.
Compare with
AdditionAnnexAppendageAttachmentEnhanceExpansionExtraIncrease
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