Barre is a term that refers to pressing many strings simultaneously with one finger. Additionally, there are major and minor agreements, which should be learned after understanding the fundamental agreements.
These are really extensions of the first type, affixed to the claw above. Because it takes more effort to repeat these chords clearly and relaxedly, it is probable that you may initially lack the necessary strength in your fingers, which will be developed during the practice.
Experts propose learning bar chords more readily by first arranging the fingers necessary to make the chord in the first position and arpeggiating the appropriate notes, then fixing the index finger to compensate for the free strings.