How to Conditionally Format text with blank cells

I have a column with, say, 20 rows. 10 of the cells contain the text "Start". 2 of the cells contain the text "Stop". The remaining 8 cells equal to "".

In another cell (different row and column as above) I have a cell containing "Start".

I select the 20 cells in the Column, choose "Conditional Formatting" , "Format only cells that contain", "Cell Value not equal to Start", Format fill to yellow.

The 2 cells that contain "Stop" fill yellow, but also the 8 cells equal to "". I'm not sure why this happens.

If my desire is to fill only the 2 cell that contain "Stop", how do I fix my formatting?

Thank you.

FDibbins, the cells in the 20 row Column are variable as is the reference cell in a different row/column. Solution 2 will only work in the one instance.

This is probably not the most practical way but I would just add another conditional formatting and ensure it is above your original one to say if the cell value = 0, then fill the cell white. (Select all 20 cells, choose "Conditional Formatting", "Highlight cells rule equal to", type in 0 and choose a custom format and change the cell background fill colour to white.)

I have included an image to explain this below.
Attachment 620127

Thank you Ali, that is EXACTLY what I needed. I tried many formulas, but never figured out how it was formatted for a range of cells. Surprisingly difficult to resolve via web search!