* -ly: This suffix turns adjectives into adverbs, so "physically" means "in a physical way".
* -ity: This suffix turns adjectives into nouns, so "physicality" refers to the quality of being physical.
* -ness: This suffix also turns adjectives into nouns, so "physicalness" refers to the state of being physical.
You could also use prefixes like "un-" to create antonyms, such as "unphysical", which means "not physical" or "not related to the body".
Ultimately, the best suffix to use depends on the specific meaning you want to convey.