GrassBug
Grass/Bug weaknesses
Grass/Bug is weak to Fire, Flying, Ice, Poison, Bug and Rock, and takes 4× from Fire and Flying.
When Grass/Bug Pokémon are hit
4×Hits hardest
2×Super effective
½×Not very effective
¼×Barely scratches it
Its two types separately
Multiply the two to get the result. For example, Fire deals 2× × 2× = 4×.