Mostly the same but with small differences; similar in general but with minor discrepancies.
大体相同，略有差异。
《庄子·天下》大同而与小同异，此之谓小同异；万物毕同毕异，此之谓大同异。”
The two proposals are essentially the same, with only a few minor changes — they are mostly alike but with small differences.
Learn the next connected idiom: 大同小异 (dà tóng xiǎo yì) → 异军突起 (yì jūn tū qǐ)
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