Why near 17 percent of Quranic words start with 'wa' (وَ)? Can we detach 'wa' from those words?

I'm working on Quran (using Quran's database ) and I've noticed that from like 17000 distinct words of Quran, around 3000 start with wa attached to the beginning of the word. Examples: وَیَتَفَکَّرُونَ وَیَهْدِی وَتَنَازَعْتُمْ وَقَصْرٍ وَکَانُوا وَالْمُؤْتُونَ وَالْجِبَالَ وَانْشَقَّتِ وَأَقْوَمَ وَجَاهِدْهُمْ وَجَعَلَ وَتَظُنُّونَ وَجَدْتُمُوهُمْ وَوَعَدْتُکُمْ وَاعْبُدُوهُ وَأَجَلٌ وَکَیْفَ وَسَعَیٰ وَنَهَرٍ وَیُونُسَ This means that based on what I've found online in Quran's scripture, near 17% of words have wa attached to them at the beginning. This makes lingual analysis of Quran really really hard. Why is it so? Is it a simple typing mistake, or is it a known Arabic or Quranic rule? Is it safe if I remove them from those words?