serve V 服務 服役
subserve V 有助於(help)
conserve V 保存;保育;節省(全部留下來)
disserve V 幫倒忙(damage)
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desserve V 應得 EX: YOU deserve it.(當之無愧,你活該)
reserve V保留 (reserve a table/fight tickets )(保留到以後再用)
preserve V保存(古蹟保存)
observe (觀察watch)/ (遵守 comply with )/(慶祝 celebrate)