English questions ① Does “corny” mean “What you said was too sweet →adjective→肉麻”？ Does “tricky” mean “difficult”？ A friend told me them， but I checked them，the meanings were different. ②Whether this sentence is right？ （Thanks designer “name”.）That friend insisted that I should write it. I asked him whether I need to add a comma after “thanks”？He said that I didn't need to add a comma. ③As usual，people say “thank you”. Does it mean “thank sb”？ So why can‘t I write “thank designer ”name“？