At the basic level knowing a word is knowing its spelling and meaning. Your knowledge about the word at this level is receptive knowledge. It means your knowledge about this word only can be used in reading and listening activities. You can not used this knowledge in writing and speaking activities.
Your knowledge about a word will be productive if you know at least its spelling, meaning, pronunciation, and part of speech. And it is best if you all the above nine aspects. In writing activity for example, you need to know the part of speech. Its part of speech will determine its position in phrase or sentence. On speaking, you need to know not only part of speech of the word but also its pronunciation.
Thornbury, Scott. 2002. How to Teach Vocabulary. Pearson Education Limited: England