The word "unitizes" is not very commonly used, so finding synonyms may be a bit tricky. One possible way to rephrase it is to use words like "consolidate" or "bundle", which can convey similar meanings depending on the context. Another option is to use phrases like "put together", "package", or "assemble", which can convey the idea of combining different elements into a cohesive whole. Alternatively, you can use more specific terms that relate to the particular type of unitization, such as "containerize", "palletize", or "segmentize". Regardless of the approach you take, the key is to find words that accurately convey the intended meaning and fit well with the overall tone and style of the writing.