✅ Fill means to extend or be present throughout (The smell of fresh bread filled the room).

✅ Permeate means to saturate and become spread throughout something (Happiness permeated everything she wrote).

✅ Both of these words refer to a thing, such as a smell or mood, becoming tangible or present in every part of something.

✅ Permeate is a fancier, more formal word than fill.

✅ Develop means to elaborate on something, giving it more detail, depth, or scope (develop an argument).

✅ Expand means to express something in more detail or give it more scope (expand your point).

✅ Both of these words mean to make something more detailed and usually larger in consequence.

✅ Develop emphasizes improving what you already have, whereas expand emphasizes filling it out beyond what was there (I developed my ideas; I expanded my portfolio).

✅ Conscientious describes being careful and painstaking (a conscientious student).

✅ Meticulous describes being very careful over small details (a meticulous approach to work).

✅ Conscientious and meticulous both emphasize taking care and being detail-oriented (He was very conscientious about minimizing his environmental impact; She was meticulous about making sure her cookies were identical).

✅ However, meticulous puts more emphasis on getting even tiny details perfect.