facts on the ground

common ground

A characteristic or interest shared by multiple people or systems; any belief, etc. held in common.

ear to the ground

The practice or characteristic of carefully gathering information; a state or mindset of attentiveness.

eyes on the ground

One or more observers in an area of interest.

from the ground up

From the beginning; starting with the basics, foundation, or fundamentals.

get off the ground

To succeed or begin to succeed.

go to ground

To hide from public view or sequester oneself, especially when authorities, members of the news media, or others are looking for one.

ground ball with eyes

A weakly hit ground ball that barely evades the infielders.

ground floor

The initial stage of a project.