This is the 13982nd most frequent Spanish word.
suelta
"Loose" or "release."
Here, 'suelta' acts as an adjective referring to 'cabello', meaning 'loose' in English, as in untied or not restricted.
Ella siempre lleva el cabello suelta porque le resulta más cómodo.
She always wears her hair loose because it is more comfortable for her.
In this sentence, 'sueltes' is a verb conjugation in the present subjunctive form of 'soltar', meaning 'to let go' or 'to release'.
Por favor, no sueltes la cuerda hasta que te lo diga.
Please don't let go of the rope until I tell you.
Here, 'suelta' is an adjective describing 'tierra', denoting a quality of being not compacted or spread out.