Cannabis and Roach

Cannabis noun - Any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs.

Roach and cannabis are semantically related In some cases you can use "Roach" instead a noun "Cannabis".

Roach noun - European freshwater food fish having a greenish back.

Cannabis and roach are semantically related in grass topic. You can use "Cannabis" instead a noun "Roach".