Punjabis
The main language of the Punjabi people is Punjabi and its associated dialects, which differ depending on the region of Punjab the speaker is from; there are notable differences in the Lahnda languages, spoken in the Pakistani Punjab. In the Pakistani Punjab, the vast majority still speak Punjabi, even though the language has no governmental support. In the Indian Punjab, most people speak Punjabi. English is sometimes used, and older people who lived in the undivided Punjab may be able to speak and write in Urdu. The Punjabi languages have always absorbed numerous loanwords from surrounding areas and provinces (and from English).
Languages of Pakistan
Saraiki (Sarā'īkī, also spelt Siraiki, or less often Seraiki) is an Indo-Aryan language of the Lahnda group, spoken in the south-western half of the province of Punjab. Saraiki is to a high degree mutually intelligible with Standard Punjabi and shares with it a large portion of its vocabulary and morphology. At the same time in its phonology it is radically different (particularly in the lack of tones, the preservation of the voiced aspirates and the development of implosive consonants), and has important grammatical features in common with the Sindhi language spoken to the south. Saraiki is the first language of about 20 million people in Pakistan, its territory ranges across southern Punjab, parts of southern Khyber Pakhtunkhwa, and some border regions of northern Sindh and eastern Balochistan.