There is a major difference between the two. The first one that you linked to is strictly used for fumes and airborne dust particles. They consist of several filter elements progressing from coarse to finer and finer. Some have an activated charcoal/carbon as the last one for odor removal. They are usually hung from the ceiling, have a small fan and recirculate the room air.
A wood/chip extractor has a much larger fan that will be able to pick up larger pieces. From there they go into a cyclone and or some kind of collection container. The air then is usually discharged outside or can be run thru a filter and returned back into the room. A cyclone can extract a fair amount of dust out of the airstream.
A wood/chip extractor can be used as a fume extractor if it is vented to the outside. The one disadvantage to the wood/chip extractor is the noise level. This is due to the larger more powerful fan, if it can be put in another roon or outside then all you will hear is air moving.
If I had my choice I would use a wood/chip extractor to do both jobs. There is a thread here where someone built a cyclone and I believe he used it with mdf and had good results.
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