Nowadays, Muslims are saying 'mosque' instead of Musjid.

Answer

In fact, the entire lifestyle of Muslims is anti-Sunnah and anti-Islam. Muslims have fully adopted the lifestyle of the Yahood and Nasaara. There is therefore nothing surprising when they say: 'mosque' for Musjid, 'god' for Allah Ta'ala, 'prophet' for Rasulullah (Sallallahu alayhi wasallam). There remains today nothing of Islam in Muslims.

Predicting these times of kuffaar emulation by Muslims, Rasulullah (Sallallahu alayhi wasallam) said:

"Soon shall there dawn an age when nothing of Islam will remain except its name; nothing of the Qur'aan will remains except its text; the Musaajid will be beautiful ornate structures, but devoid of guidance. The worse of the people under the canopy of the sky will be the Ulama. From them will emerge fitnah, and the fitnah will rebound on them."