Answer:11-abstract 12-abstract 13-concrete 14-proper noun 15-proper noun 16-abstract noun 17-proper noun and abstract 18-proper noun 19-proper noun and concrete noun 20- concrete noun and abstract noun
Step-by-step explanation:
The things we are able to physically touch are called concrete noun for e.g table pen pencil. The things we are unable to physically touch are abstract noun for e.g princess, beauty, honesty