This is the 14633rd most frequent Turkish word.
planları
"Plans" or "their plans" (depending on context).
In this sentence, 'planlarıyla' ('their plans') is used in the possessive plural form with the instrumental case to indicate the plans belonging to 'them' and the activity associated with handling them.
Arkadaşlarım tatil için planlarıyla uğraşıyor.
My friends are working on their plans for the vacation.
Here, 'planlarım' ('my plans') is used in the first person singular possessive plural form to express the speaker's specific plans.
Benim planlarım bu yıl işimde başarılı olmak üzerine yoğunlaşıyor.
My plans this year focus on excelling in my work.
In this sentence, 'planları' ('plans') is used in the third person singular possessive plural form to indicate the possession of the plans by the company and their implementation.