This is the 14561st most frequent Turkish word.
paylaşması
The act of sharing.
The word 'paylaşması' is used as a gerund in possessive form, referring to one person's act of sharing in the third person singular.
Bilgilerini başkalarıyla paylaşması onun cömertliğini gösteriyor.
Sharing his/her information with others shows his/her generosity.
Here, 'paylaşması' refers to a specific act of sharing (posting) photos, showing caution or concern.
Evinin fotoğraflarını internette paylaşması pek güvenli değil.
Sharing the photos of his/her house on the internet is not very safe.
In this sentence, 'paylaşması' is used as an infinitive noun to mean 'the act of sharing' required to be done by the subject.