Italian Renaissance:
covered the 15th and 16th centuries
spreading across Europe
best known for its achievements in painting, architecture, sculpture, literature, music, philosophy, science and technology, and exploration
Italian artists portrayed mostly classical mythology, while Northern artists portrayed mostly domestic interiors and portraits.
Northern Renaissance:
period in which artists north of the Alps in the Low Countries (the Netherlands and Belgium), Germany, France, and England— adopted and adapted the ideas of the Italian Renaissance.
famous for its advanced oil painting techniques, realistic, expressive altarpiece art, portraiture on wooden panel paintings
Northern Artistic Renaissance focused more on empirical observation and accurately paying attention to details of visual reality. The Italian Artistic Renaissance, however, accurately portrayed visual reality through proportion, perspective, and human anatomy.
Both:
both known for their paintings
Both imitated nature through emotional intensity through religious scenes
Both standards of literature portrayed the belief that it was an individual's duty to participate in their community and ascend toward union with God
I hope this helps!