CCS and DAC+S are acronyms for two different technologies.
CCS stands for carbon capture and storage, which captures CO2 at the point source. It is an approach for emissions reductions: it typically prevents new fossil CO2 emissions from entering the atmosphere
DAC+S stands for direct air capture and storage, which removes CO2 from ambient air. DAC+S goes beyond reducing emissions because it allows to remove residual and historic CO2 emissions that are already in the atmosphere, which produces negative emissions.
Climeworks solely focuses on direct air capture and storage.