Some common synonyms of support are advocate, back, champion, and uphold. While all these words mean "to favor actively one that meets opposition," support is least explicit about the nature of the assistance given. When could advocate be used to replace support? While in some cases nearly identical to support, advocate stresses urging or pleading. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.