This is the 687th most frequent Dutch word.
plannen
To plan.
Here, 'plannen' is used as a noun in its plural form meaning 'plans' or 'intentions'.
Ik heb plannen om volgend jaar naar Spanje te reizen.
I have plans to travel to Spain next year.
In this sentence, 'plannen' is used as a verb in the infinitive form meaning 'to plan' or 'to arrange'.
Wij gaan een feest plannen voor haar verjaardag.
We are going to plan a party for her birthday.
Here, 'plannen' (as 'plant') is the conjugated verb in third-person singular, meaning 'to plan' or 'to organize' strategically.