Meaning of the word "lose ground" in English

What does "lose ground" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

lose ground

US /luːz ɡraʊnd/
UK /luːz ɡraʊnd/
"lose ground" picture

Idiom

to become less popular or successful

Example:
The company started to lose ground to its competitors.
The candidate is losing ground in the polls.