This is the 4416th most frequent Russian word.
видела
"Saw" (past tense of "to see" for a female subject in Russian).
The word 'видела' is used here as the past tense of the verb 'видеть' (to see), conjugated for the first person singular in the feminine gender, indicating an action ('saw') that the speaker performed in the past.
Я вчера видела красивый закат.
I saw a beautiful sunset yesterday.
In this sentence, 'видела' is the past tense of 'видеть', conjugated for the third person singular feminine, describing something that a female subject has observed recently.
Она только что видела, как птица пролетела.
She just saw a bird fly by.
Here, 'видели' is the past tense of 'видеть', conjugated for the first person plural, expressing a mutual 'sighting' experience.