Meaning of the word "saying and doing are two things" in English

What does "saying and doing are two things" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

saying and doing are two things

US /ˈseɪ.ɪŋ ænd ˈduː.ɪŋ ɑːr tuː θɪŋz/
UK /ˈseɪ.ɪŋ ənd ˈduː.ɪŋ ə tuː θɪŋz/
"saying and doing are two things" picture

Idiom

it is easier to say you will do something than to actually do it

Example:
He promised to quit smoking, but saying and doing are two things.
I know you want to help, but saying and doing are two things.