This is the 688th most frequent Czech word.
plně
Fully; completely.
Here, 'plně' emphasizes the completeness of agreement, modifying the verb 'souhlasím' (agree).
Plně souhlasím s tvým názorem.
I fully agree with your opinion.
'Plně' is used to indicate the totality of realization, modifying the verb 'uvědomil' (realized).
Po této zkušenosti jsem si plně uvědomil, co potřebuje napravit.
After this experience, I fully realized what needs to be corrected.
The word 'plně' here indicates that the abilities described completely satisfy the conditions or requirements stated, modifying the verb 'odpovídají' (meet).