Thank you for your question.
Irish people have their own language which is different from English, many of us speak both languages fluently.
English/British imperialism tried hard for 800 years to eradicate Irish culture, language etc in much the same way as they did in the Indian sub-continent during the times of the British Raj.
Coincidently, British/English imperialism via their tactics of divide & conquer, created sectarian divisions, just like in the Indian Sub-continent, then eventually imposed partition on Ireland.
Historically & culturally the Irish are a Celtic people although in modern times this means very little, except to racists.
The real difference is that Ireland has been a victim of British colonialism & imperialism.