Live rosin and live resin sound like the same product and are not. Rosin is solventless: ice, water, heat and pressure, and nothing else. Resin is made with a hydrocarbon solvent. One letter separates the words; the entire production method separates the products. If you learn one distinction in this whole section, make it this one.
What they share
Both start from the same feedstock: flower that was frozen fresh at harvest instead of dried and cured. That is the only thing the word "live" means on a label. It describes what went in, not anything living in the finished product.
Where they diverge
Live rosin is pressed. The frozen material is agitated in ice water so the trichome heads separate from the plant matter, filtered through a stacked set of micron bags into bubble hash, then pressed under heat and pressure until the oil runs out of it. No solvent touches it at any stage.
Live resin is washed. The same frozen material is run through a closed-loop system using butane or propane as the solvent, which is then purged off. Butane holds terpenes well and propane allows a lower operating temperature.
Which one is better
Neither, categorically. The honest ranking is on terpene preservation, where solventless ice-water hash sits at the top and hydrocarbon extraction from fresh-frozen material sits just below it. Those are close together and both are a long way above extraction from dried and cured material. What actually decides the jar in your hand is the quality of the starting flower and the care taken in the run.
TRENDI produces both. The brand answers this question in its own FAQ: many of our concentrates and vapes feature live rosin and solventless extraction, while others use premium live resin for strain-true flavor, and every batch lists its method.
One more thing the words do not cover
Resin is an overloaded word. In a dispensary it means the hydrocarbon concentrate. It does not mean the sticky residue in a used pipe, and it does not mean reclaim. Those are different substances that happen to share a name.